Boston-based Boylston Properties Co. Inc. is moving forward with development of a Marriott Residence Inn at 121 Brookline Ave. in the Fenway neighborhood of Boston, near Fenway Park.

The 175-room hotel will have 6,000 feet of retail or restaurant space on the ground floor, according to a statement. Boylston Properties plans to begin construction in the fall.

The hotel will be operated by the Boston-based Pyramid Hotel Group under a long-term agreement with Boylston Properties, according to a statement. The eight-story hotel will feature a fitness center with modern equipment and televisions, and parking for 50 vehicles below ground level.

"We’re delighted to bring a great hotel like Marriott Residence Inn to our favorite area of the city," said William McQuillan, president of Boylston Properties. "It is another great step in the continuing Fenway neighborhood revitalization, and we can’t wait to get the shovel in the ground later this year."

"Marriott is very pleased to be working with Boylston Properties to develop the first Residence Inn by Marriott in the Boston Downtown core," said Skip LaBarre, vice president for lodging development in Marriott’s eastern regional office. "The Residence Inn, which is Marriott’s premier extended-stay product, will be very well positioned in the Fenway area of the city."

The architect on the project is Boston-based Group One Partners Inc. Winchester’s John Moriarty & Assoc. will be the contractor.