SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D
                                 (Rule 13d-101)

             INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
             TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT
                                TO RULE 13d-2(a)
                              (Amendment _______)*

                          FIVE STAR QUALITY CARE, INC.
                                (Name of Issuer)

                          COMMON STOCK, $0.01 PAR VALUE
                         (Title of Class of Securities)

                                   33832D 10 6
                                 (CUSIP Number)

                                 John A. Mannix
                              HRPT Properties Trust
                                400 Centre Street
                                Newton, MA 02458
                                 (617) 332-3990
            (Name, Address and Telephone Number of Person Authorized
                     to Receive Notices and Communications)

                                December 17, 2001
             (Date of Event which Requires Filing of this Statement)




If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  that is the subject of this  Schedule  13D, and is filing this
schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box
o.

Note:  Schedules  filed in paper format shall include a signed original and five
copies of the  schedule,  including  all  exhibits.  See Rule 13d-7(b) for other
parties to whom copies are to be sent.

                         (Continued on following pages)

                              (Page 1 of 12 Pages)

* The remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for  any  subsequent   amendment   containing   information  which  would  alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).



                                  SCHEDULE 13D
--------------------------------------------------------------------------------
CUSIP No. 33832D 10 6                                         Page 2 of 12 Pages
--------------------------------------------------------------------------------


--------------------------------------------------------------------------------
1           NAMES OF REPORTING PERSONS
            OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

            HRPT Properties Trust  I.R.S. ID No. 04-6558834
--------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A
            GROUP*
                                                           (a) [ ]
                                                           (b) [ ]
--------------------------------------------------------------------------------
3           SEC USE ONLY


--------------------------------------------------------------------------------
4           SOURCE OF FUNDS*

            00
--------------------------------------------------------------------------------
5           CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
            ITEMS 2(d) OR 2(e)     [ ]


--------------------------------------------------------------------------------
6           CITIZENSHIP OR PLACE OF ORGANIZATION

            Maryland
--------------------------------------------------------------------------------
                          7         SOLE VOTING POWER
NUMBER OF
SHARES                              1,280,923.8
BENEFICIALLY              ------------------------------------------------------
OWNED BY                  8         SHARED VOTING POWER
 EACH
REPORTING
PERSON                    ------------------------------------------------------
 WITH                     9         SOLE DISPOSITIVE POWER

                                    1,280,923.8
                          ------------------------------------------------------
                          10        SHARED DISPOSITIVE POWER


--------------------------------------------------------------------------------
11          AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

            1,280,923.8
--------------------------------------------------------------------------------
12          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
            SHARES*                          [ ]

--------------------------------------------------------------------------------
13          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

            29.3%
--------------------------------------------------------------------------------
14          TYPE OF REPORTING PERSON*

            OO
--------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!



                                  SCHEDULE 13D
--------------------------------------------------------------------------------
CUSIP No. 33832D 10 6                                         Page 3 of 12 Pages
--------------------------------------------------------------------------------


--------------------------------------------------------------------------------
1           NAMES OF REPORTING PERSONS
            OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

            REIT Management & Research LLC  I.R.S. ID No. 04-3583787
--------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                           (a) [ ]
                                                           (b) [ ]

--------------------------------------------------------------------------------
3           SEC USE ONLY


--------------------------------------------------------------------------------
4           SOURCE OF FUNDS*

            OO
--------------------------------------------------------------------------------
5           CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
            ITEMS 2(d) OR 2(e)     [ ]

--------------------------------------------------------------------------------
6           CITIZENSHIP OR PLACE OF ORGANIZATION

            Delaware
--------------------------------------------------------------------------------
                          7         SOLE VOTING POWER
NUMBER OF
SHARES
BENEFICIALLY              ------------------------------------------------------
OWNED BY                  8         SHARED VOTING POWER
 EACH
REPORTING
PERSON                    ------------------------------------------------------
 WITH                     9         SOLE DISPOSITIVE POWER


                          ------------------------------------------------------
                          10        SHARED DISPOSITIVE POWER


--------------------------------------------------------------------------------
11          AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

            1,280,923.8
--------------------------------------------------------------------------------
12          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
            SHARES*                          [ ]

--------------------------------------------------------------------------------
13          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

            29.3%
--------------------------------------------------------------------------------
14          TYPE OF REPORTING PERSON*

            00
--------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!



                                  SCHEDULE 13D
--------------------------------------------------------------------------------
CUSIP No. 33832D 10 6                                         Page 4 of 12 Pages
--------------------------------------------------------------------------------


--------------------------------------------------------------------------------
1           NAMES OF REPORTING PERSONS
            OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

            REIT Management & Research Trust  I.R.S. ID No. 04-3402206
--------------------------------------------------------------------------------
2           CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                           (a) [ ]
                                                           (b) [ ]

--------------------------------------------------------------------------------
3           SEC USE ONLY


--------------------------------------------------------------------------------
4           SOURCE OF FUNDS*

            00
--------------------------------------------------------------------------------
5           CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
            ITEMS 2(d) OR 2(e)     [ ]


--------------------------------------------------------------------------------
6           CITIZENSHIP OR PLACE OF ORGANIZATION

            Massachusetts
--------------------------------------------------------------------------------
                          7         SOLE VOTING POWER
NUMBER OF
SHARES
BENEFICIALLY              ------------------------------------------------------
OWNED BY                  8         SHARED VOTING POWER
 EACH
REPORTING
PERSON                    ------------------------------------------------------
 WITH                     9         SOLE DISPOSITIVE POWER


                          ------------------------------------------------------
                          10        SHARED DISPOSITIVE POWER


--------------------------------------------------------------------------------
11          AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

            1,280,923.8
--------------------------------------------------------------------------------
12          CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
            SHARES*                          [ ]

--------------------------------------------------------------------------------
13          PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

            29.3%
--------------------------------------------------------------------------------
14          TYPE OF REPORTING PERSON*

            OO
--------------------------------------------------------------------------------
                      *SEE INSTRUCTIONS BEFORE FILLING OUT!



                                  SCHEDULE 13D
--------------------------------------------------------------------------------
CUSIP No. 33832D 10 6                                         Page 5 of 12 Pages
--------------------------------------------------------------------------------


Item 1.  Security and Issuer.

         The class of equity  securities  to which  this  statement  relates  is
shares of Common  Stock,  par value $0.01 (the  "Shares"),  of Five Star Quality
Care, Inc., a Maryland  corporation ("Five Star"),  with its principal executive
offices located at 400 Centre Street, Newton, Massachusetts 02458.

Item 2.  Identity and Background.

         The persons filing this statement are HRPT Properties Trust, a Maryland
real estate investment trust ("HRP"), REIT Management & Research LLC, a Delaware
limited  liability  company  ("RMR") and REIT  Management  & Research  Trust,  a
Massachusetts business trust ("RMR Trust").

         HRP's  principal  business  is to operate as a real  estate  investment
trust.  The  principal  office of HRP is located at 400 Centre  Street,  Newton,
Massachusetts 02458. The trustees of HRP are Patrick F. Donelan,  Rev. Justinian
Manning, C.P., Frederick N. Zeytoonjian,  Barry M. Portnoy and Gerard M. Martin.
The executive officers of HRP are John A. Mannix,  President and Chief Operating
Officer, John C. Popeo, Treasurer,  Chief Financial Officer and Secretary, David
M. Lepore,  Senior Vice President,  and Jennifer B. Clark, Senior Vice President
and Assistant Secretary.

         RMR's principal  business is providing advisory services to real estate
investment  trusts  such as HRP,  and  others.  The  principal  office of RMR is
located at 400 Centre Street, Newton,  Massachusetts 02458. The directors of RMR
are David J.  Hegarty,  Gerard M.  Martin and Barry M.  Portnoy.  The  executive
officers of RMR are David J. Hegarty,  President and Secretary,  John G. Murray,
Executive Vice President,  John A. Mannix,  Vice  President,  Thomas M. O'Brien,
Vice  President,  Jennifer B. Clark,  Vice  President and  Assistant  Secretary,
Evrett W. Benton,  Vice President,  John R. Hoadley,  Vice  President,  Bruce J.
Mackey Jr., Vice President,  David M. Lepore,  Vice President and John C. Popeo,
Treasurer. The sole member and manager of RMR is RMR Trust.

         RMR Trust's  principal  business is to act as the member and manager of
RMR. The principal office of RMR Trust is located at 400 Centre Street,  Newton,
Massachusetts  02458. The trustees of RMR Trust are David J. Hegarty,  Gerard M.
Martin and Barry M. Portnoy.  The trustees and  executive  officers of RMR Trust
are the same as the  directors  and  executive  officers of RMR. Each of Messrs.
Martin and Portnoy own 50% of the outstanding capital of RMR Trust.

         Each of the individuals  listed above (i) except for Mr. Donelan,  is a
United States citizen, (ii) except for Messrs.  Donelan and Zeytoonjian and Rev.
Manning,  has a business  address at



                                  SCHEDULE 13D
--------------------------------------------------------------------------------
CUSIP No. 33832D 10 6                                         Page 6 of 12 Pages
--------------------------------------------------------------------------------


400 Centre  Street,  Newton,  Massachusetts  02458 and (iii)  except for Messrs.
Donelan and Zeytoonjian and Rev. Manning, is principally  employed by RMR in the
capacities specified above. Mr. Hegarty also serves as the President,  Secretary
and Chief Operating Officer of Senior Housing  Properties Trust, a Maryland real
estate investment trust ("SNH"), and Mr. Hoadley is also the Treasurer and Chief
Financial  Officer of SNH. Mr. Benton is also the President and Chief  Executive
Officer of Five Star,  and Mr. Mackey is also the Treasurer and Chief  Financial
Officer of Five Star. Mr. Donelan is a British citizen and is Chairman and Chief
Executive  Officer of  eSecLending  and has a business  address at Sion Hall, 56
Victoria Embankment,  London,  United Kingdom. Rev. Manning is the pastor of St.
Gabriel's parish at 139 Washington Street,  Brighton,  Massachusetts  02135. Mr.
Zeytoonjian is Chairman and Chief Executive Officer of Turf Products Corporation
and has a business address at 157 Moody Road, Enfield, Connecticut 06083.

         Neither HRP, RMR, RMR Trust nor any of the individuals  specified above
has,  during  the last five  years,  been  convicted  in a  criminal  proceeding
(excluding  traffic  violations or similar  misdemeanors),  or been party to any
civil proceeding  which resulted in a judgment,  decree or final order enjoining
future violations of, or prohibiting or mandating activities subject to, federal
or state securities laws or finding of any violation with respect to such laws.

Item 3. Source and Amount of Funds or Other Consideration.

         On December 31, 2001, SNH will distribute to its shareholders one Share
of Five Star for every 10 Shares of SNH owned on the record date of December 17,
2001. HRP will receive  1,280,923.8 Shares of Five Star through its ownership of
12,809,238  Shares of SNH.  The Five  Star  Shares  to be  received  by HRP will
represent 29.3% of the total  outstanding Five Star Shares.  HRP will distribute
all of the Five Star Shares it receives to its shareholders  based on a ratio of
one Share of Five Star for every  100  shares of HRP  owned.  In order to effect
this 1 for 100 distribution, HRP expects to purchase from Five Star 7,163.7 Five
Star Shares on December 31, 2001.

         Mr. Martin,  through a corporation of which he is the sole stockholder,
expects to receive a distribution of 12,371.9 Shares in the Spin-off (as defined
in Item 4 below).  Similarly,  Mr. Portnoy, through a corporation of which he is
the sole  stockholder,  expects to receive a distribution  of 12,371.9 Shares in
the Spin-off.  In addition,  the other  trustees and  executive  officers of HRP
expect to receive a  distribution  of 923.9 Shares in the Spin-off and the other
trustees,  directors  and  executive  officers  of RMR and RMR  Trust  expect to
receive a distribution of 2,919.1 Shares in the Spin-off.

Item 4.  Purpose of Transaction.



                                  SCHEDULE 13D
--------------------------------------------------------------------------------
CUSIP No. 33832D 10 6                                         Page 7 of 12 Pages
--------------------------------------------------------------------------------


         The  transactions  described  in Item 3  above  and  Item 5 below  were
entered into principally for investment purposes.

         On December 31, 2001,  SNH expects to distribute to the record  holders
of its common shares of beneficial  interest,  4,342,170  Shares of Five Star, a
wholly-owned   subsidiary   of  SNH,  as  a  special   distribution   (the  "SNH
Distribution"). HRP, owner of 29.5% of SNH's common shares, has agreed, pursuant
to a certain transaction  agreement,  to immediately  distribute the 1,280,923.8
Shares it expects to receive in the SNH  Distribution  to the record  holders of
its common shares of  beneficial  interest in a special  distribution  (the "HRP
Distribution",  and collectively with the SNH Distribution, the "Spin-off"). The
record  date  for  each of the SNH  Distribution  and the HRP  Distribution  was
December 17, 2001, and the date for each of the  distributions  will be December
31, 2001.  The Shares to be  distributed  in the Spin-off  have been  registered
under the Securities Act of 1933, as amended,  and will be separately  listed on
the American  Stock Exchange under the symbol "FVE." On the record date, SNH had
43,421,700  common  shares  of  beneficial  interest  outstanding  and  HRP  had
128,808,747  common  shares  of  beneficial  interest  outstanding.  SNH  common
shareholders  will  receive  one Five Star Share for every 10 SNH common  shares
held on the record date, and HRP common  shareholders will receive one Five Star
Share for every 100 HRP common shares held on the record date.

         In  connection  with the  Spin-off,  Five Star agreed to sell,  and HRP
agreed to purchase, up to 10,000 Shares in order that HRP may effect a 1 for 100
distribution  to its holders of common shares of beneficial  interest.  Based on
the number of record  holders of HRP's common  shares on December 17, 2001,  HRP
expects to purchase  7,163.7 Shares on December 31, 2001, from Five Star and the
Shares will be distributed to HRP common shareholders.

         Five Star is an  operating  company,  which will  lease and  operate 56
properties from SNH after the Spin-off. Five Star expects to lease 31 additional
properties  that SNH expects to acquire from Crestline  Capital  Corporation and
its subsidiaries.  Marriott Senior Living Services, Inc. will continue to manage
these 31 properties.

         Five Star, FSQ  Acquisition,  Inc., a  wholly-owned  subsidiary of Five
Star,  and FSQ,  Inc.  have  entered  into an  Agreement  of Merger (the "Merger
Agreement").  FSQ,  Inc. is a facility  manager and an  affiliate of RMR and RMR
Trust. Pursuant to the Merger Agreement,  FSQ Acquisition,  Inc. will merge into
FSQ, Inc. and become a wholly-owned subsidiary of Five Star, in exchange for the
issuance of 125,000 Shares to each of Messrs.  Martin and Portnoy, the owners of
FSQ, Inc. The transaction is expected to close on or around January 2, 2002. The
Merger Agreement contains customary conditions, representations,  warranties and
indemnitees.

         HRP,  RMR,  RMR Trust  and their  respective  trustees,  directors  and
executive  officers may make  purchases of Shares from time to time, in the open
market or in private  transactions,  depending on their  respective  analysis of
Five Star's  business,  prospects and financial  condition,



                                  SCHEDULE 13D
--------------------------------------------------------------------------------
CUSIP No. 33832D 10 6                                         Page 8 of 12 Pages
--------------------------------------------------------------------------------


the market for such stock, other investment and business opportunities available
to them,  general economic and stock market  conditions,  proposals from time to
time sought by or presented  to them and other  factors,  although  they have no
present  intention to do so other than as  described  above in this Item 4. HRP,
RMR, RMR Trust and their respective  trustees,  directors and executive officers
each intends to closely monitor their investments and may from time to time take
advantage  of  opportunities  presented to them.  HRP,  RMR, RMR Trust and their
respective  trustees,  directors and  executive  officers may in the future also
formulate plans or proposals  regarding Five Star,  including plans or proposals
concerning  events or  transactions  of the kind  described  in  paragraphs  (a)
through (j) below.

         Depending  upon  HRP's,   RMR's,   RMR  Trust's  and  their  respective
trustees',  directors'  and  executive  officers'  continuing  review  of  their
investments and various other factors, including those mentioned above, HRP,RMR,
RMR Trust or their respective  trustees,  directors and executive  officers may,
subject to any applicable  securities laws and lock-up  arrangements,  decide to
sell all or any part of the Shares, although they have no current plans to do so
other than the dispositions described above in connection with the Spin-off.

         Except as set forth in this Item 4,  neither  HRP,  RMR,  RMR Trust nor
their respective  trustees,  directors and executive  officers have any plans or
proposals which relate to or would result in:

         (a) The  acquisition  by any person of  additional  securities  of Five
Star, or the disposition of securities of Five Star;

         (b)  An  extraordinary   corporate  transaction,   such  as  a  merger,
reorganization or liquidation, involving Five Star or any of its subsidiaries;

         (c) A sale or transfer  of a material  amount of assets of Five Star or
any of its subsidiaries;

         (d) Any change in the present  board of directors or management of Five
Star including any plans or proposals to change the number or terms of directors
or to fill any existing vacancies on the board;

         (e) Any material change in the present  capitalization  or distribution
policy of Five Star;

         (f) Any other  material  change in Five Star's  business  or  corporate
structure;



                                  SCHEDULE 13D
--------------------------------------------------------------------------------
CUSIP No. 33832D 10 6                                         Page 9 of 12 Pages
--------------------------------------------------------------------------------


         (g)  Changes in Five  Star's  articles of  amendment  and  restatement,
bylaws or  instruments  corresponding  thereto or other actions which may impede
the acquisition of control of Five Star by any person;

         (h) Causing a class of  securities  of Five Star to be delisted  from a
national  securities  exchange or to cease to be  authorized  to be quoted in an
inter-dealer quotation system of a registered national securities association;

         (i) A class of equity  securities  of Five Star  becoming  eligible for
termination  of  registration  pursuant to Section  12(g)(4)  of the  Securities
Exchange Act of 1934; or

         (j) Any action similar to any of those enumerated above.

Item 5.  Interest in Securities of the Issuer.

         (a) HRP has the right to receive  1,280,923.8  Shares,  or 29.3% of the
issued and outstanding Shares. RMR, as HRP's investment manager,  and RMR Trust,
as the  sole  member  and  manager  of  RMR,  may  under  applicable  regulatory
definitions, be deemed to beneficially own HRP's 1,280,923.8 Shares. RMR and RMR
Trust, however, expressly disclaim any beneficial ownership of HRP's 1,280,923.8
Shares.

         The trustees and executive  officers of HRP expect to receive Shares in
connection  with the Spin-off as follows:  Mr. Martin,  through a corporation of
which Mr. Martin is the sole stockholder,  12,371.9 Shares; Mr. Portnoy, through
a corporation of which Mr. Portnoy is the sole stockholder, 12,371.9 Shares; and
other trustees and executive officers of HRP, 923.9 Shares in the aggregate.  In
addition, Messrs. Portnoy and Martin, as Managing Trustees of HRP, may be deemed
to have  beneficial  ownership of the 1,280,923.8  Shares held by HRP;  however,
Messrs.  Portnoy and Martin disclaim  beneficial  ownership of HRP's 1,280,923.8
Shares. The Shares HRP expects to receive,  when aggregated with such additional
Shares the trustees and executive  officers of HRP expect to receive,  aggregate
1,306,591.5 Shares,  which represent 29.9% of the issued and outstanding Shares.
The Shares Mr. Martin, Mr. Portnoy and the other trustees and executive officers
of HRP expect to receive are reported herein pursuant to the provisions of Items
2 through 6 of Schedule 13D. HRP,  however,  expressly  disclaims any beneficial
ownership of the Shares that Mr. Martin,  Mr. Portnoy and the other trustees and
executive officers of HRP expect to receive in the Spin-off.

         In addition, the trustees,  directors and executive officers of RMR and
RMR Trust expect to receive  Shares in connection  with the Spin-off as follows,
in part as noted above: Mr. Martin, through a corporation of which Mr. Martin is
the sole  stockholder,  12,371.9 Shares;  Mr. Portnoy,  through a corporation of
which Mr. Portnoy is the sole stockholder,  12,371.9 Shares; Mr. Hegarty,  1,144
Shares;  and  other  executive  officers  of RMR  Trust,  1,775.1  Shares in the



                                  SCHEDULE 13D
--------------------------------------------------------------------------------
CUSIP No. 33832D 10 6                                        Page 10 of 12 Pages
--------------------------------------------------------------------------------


aggregate.  The Shares held by HRP (which may be deemed to be beneficially owned
by RMR and RMR Trust),  when aggregated with such additional  Shares expected to
be received by the trustees,  directors  and  executive  officers of RMR and RMR
Trust,  aggregate  1,308,586.7  Shares,  which represent 30.0% of the issued and
outstanding  Shares.  The Shares  expected  to be received  by Mr.  Martin,  Mr.
Portnoy,  Mr. Hegarty and the other executive  officers of RMR and RMR Trust are
reported herein pursuant to the provisions of Items 2 through 6 of Schedule 13D.
RMR and RMR Trust,  however,  expressly disclaim any beneficial ownership of the
Shares  that Mr.  Martin,  Mr.  Portnoy,  Mr.  Hegarty  and the other  executive
officers of RMR and RMR Trust expect to receive in the Spin-off.

         (b) HRP has sole power to vote or dispose of its 1,280,923.8 Shares. To
HRP's knowledge, each of the trustees,  directors and executive officers of HRP,
RMR and RMR Trust  described  above  has sole  power to vote or  dispose  of the
Shares he or she beneficially owns.

         (c) Except as disclosed in Item 3 above, no transactions in Shares have
been effected during the past sixty days by HRP, RMR, RMR Trust or the trustees,
directors and executive officers of HRP, RMR and RMR Trust described above.

         (d) No other  person is known to have the right to receive or the power
to direct the receipt of  distributions  from,  or the proceeds from the sale of
securities covered by this statement.

Item 6.  Contracts,  Arrangements,  Understandings or Relationships with Respect
         to Securities of the Issuer.

         HRP,  Five Star,  RMR and other  parties  have  entered  into a certain
Transaction Agreement dated December 7, 2001 (the "Transaction  Agreement").  As
disclosed above, HRP has agreed to distribute the Shares it receives from SNH in
the SNH  Distribution  immediately  to holders of HRP common  shares  based on a
ratio of one Share of Five Star for every 100 shares of HRP. In order for HRP to
effect this distribution,  Five Star agreed to sell, and HRP agreed to purchase,
up to an additional 10,000 Shares if necessary on December 31, 2001. Also in the
Transaction  Agreement,  Five Star has  agreed  that it will not take any action
that, in the reasonable judgment of HRP and SNH, might reasonably be expected to
have an adverse  impact on the ability of SNH or HRP to qualify as "real  estate
investment trusts" under the Internal Revenue Code of 1986, as amended.

         Five Star, FSQ  Acquisition,  Inc., a  wholly-owned  subsidiary of Five
Star,  and FSQ,  Inc.  have entered into the Merger  Agreement.  FSQ, Inc. is an
affiliate  of  RMR  and  RMR  Trust.  Pursuant  to  the  Merger  Agreement,  FSQ
Acquisition, Inc. will merge into FSQ, Inc. and become a wholly-owned subsidiary
of Five Star, in exchange for the issuance of 125,000  Shares to each of Messrs.
Martin and Portnoy, the owners of FSQ, Inc. The transaction is expected to close
on



                                  SCHEDULE 13D
--------------------------------------------------------------------------------
CUSIP No. 33832D 10 6                                        Page 11 of 12 Pages
--------------------------------------------------------------------------------


or around January 2, 2002.


Item 7.  Material to be Filed as Exhibits.

         The following documents are filed as exhibits to this statement:

         1. Joint  Filing  Agreement,  dated as of  December  21,  2001,  by and
between HRP, RMR and RMR Trust.

         2.  Transaction  Agreement  dated  December  7, 2001 by and among  SNH,
certain  subsidiaries of SNH party thereto,  Five Star, certain  subsidiaries of
Five Star party thereto, FSQ, Inc.,  Hospitality  Properties Trust, HRP and RMR.
(Incorporated  by reference  to Exhibit  10.1 to the Current  Report on Form 8-K
filed by Senior Housing Properties Trust on December 17, 2001.)

         3.  Agreement of Merger by and among Five Star, FSQ  Acquisition,  Inc.
and FSQ, Inc. dated December 5, 2001. (Incorporated by reference to Exhibit 10.2
to the Current  Report on Form 8-K filed by Senior Housing  Properties  Trust on
December 17, 2001.)





                                  SCHEDULE 13D
--------------------------------------------------------------------------------
CUSIP No. 33832D 10 6                                        Page 12 of 12 Pages
--------------------------------------------------------------------------------


                                    SIGNATURE


         After reasonable  inquiry and to the best of my knowledge and belief, I
certify that the information  set forth in this statement is true,  complete and
correct.


December 21, 2001                   HRPT PROPERTIES TRUST



                                    By: /s/ John A. Mannix
                                        John A. Mannix, President



December 21, 2001                   REIT MANAGEMENT & RESEARCH LLC



                                    By: /s/ David J. Hegarty
                                        David J. Hegarty, President


December 21, 2001                   REIT MANAGEMENT & RESEARCH TRUST



                                    By: /s/ David J. Hegarty
                                        David J. Hegarty, President