Disgusting Stained Sheets, Broken Doors, Untrained Staff
This is the worst hotel I've stayed in in Boston. I got stuck in 2760 (supposed to be one of their Starwood Preferred Rooms - Yikes!) and I nearly vomited in my mouth by noticing stained sheets just before going to bed (be sure to check your sheets before you go to bed!) - it was so disgusting - i can't believe housekeeping didn't notice this. I've never experienced this in a hotel ever. **Do yourself a favor - stay right across the street at the Hilton**
Then the front door to the room is broken - the deadbolt doesn't retract when you try and close the door. 
Finally, this hotel has the smallest room bathrooms in America - i feel like the bathroom is the size of the hotel room bathrooms in Tokyo - tiny tiny tiny. If you like feeling like you're in a straight jacket when you're in your bathroom - you'll feel right at home. 
The entire front staff during check in were all marked with Trainee tags with no actual real employees around who seemed to know what they were doing. 
Lastly, the Sheraton reservation system is AWFUL. It constantly crashes and kept either erasing our reservations or could not get our check in / check out or room holder name right. I couldn't believe it. I spent nearly 4 days on the phone with their offsite reservations, hotel reservations, hotel manager, front desk and when I checked in - it STILL wasn't right. UN-FREAKING Believable?!
Save your money - don't stay at the dumpiest hotel in Boston - pick a better chain like the Hilton across the street (same price) or a Marriott or really ANY other hotel should be better than this one to ensure you have a great stay in Boston.