I have stayed at this hotel many times in the past. It is located about two blocks from Quincy Market/Faneuil Hall Marketplace and is next to loads of superb restaurants of all types, so if you're visiting Boston there is always something to do.
It is also directly on Boston Harbor and the view is great. Within walking distance is an IMAX theater, the New England Aquarium, Quincy Market, Faneuil Hall Marketplace, a 'T' stop (subway), and much more. The hotel is a five-to-ten minute train ride from Fenway Park, the Museum of Fine Arts, the Prudential Center, Copley Square, Downtown Crossing, and almost any other Boston attraction not listed above.
Awesome place, great staff, amazing in-hotel food, nice pool areas, superb bedding, lots to do. GREAT for a family trip or business trip!