EXHIBIT 99.1

                                    AGREEMENT

         Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934,
the undersigned hereby agree that only one statement  containing the information
required  by  Schedule  13D (or any  amendment  thereof)  need be filed on their
behalf with  respect to the  beneficial  ownership of any equity  securities  of
Hospitality  Properties  Trust, a Maryland real estate investment trust ("HPT"),
or any subsequent  acquisitions or  dispositions of equity  securities of HPT by
either of the undersigned.

August 21, 2001                     HRPT PROPERTIES TRUST



                                    By: /s/ John Popeo
                                        Name: John Popeo
                                        Title: Treasurer and Chief Financial
                                                 Officer



                                    REIT MANAGEMENT & RESEARCH, INC.



                                    By: /s/ Thomas M. O'Brien
                                        Name: Thomas M. O'Brien
                                        Title: Vice President