Really? Certainly not by my count.
Ames--will have new restaurant soon, making it "full service" in my mind: 50 yards from the project site
Club Quarters--not a conventional chain only in the sense its explicitly business traveler-oriented. But certainly full-service w/ Elephant & Castle. 100 yards from project site.
Parker House--200 yards from project site.
Hotel Nine Zero--200 yards from the project site.
Hilton (on the corner of Broad/Batterymarch)--200 yards from project site.
That's five within a 3-minute walk of the project site. Expand your walking radius to 10-minutes (.5 miles), and you corral the XV Beacon Hotel,
Hyatt Regency, Ritz-Carlton, and Godfrey...