I just finished up a three night stay at the Boston Westin Copley Place.

The Good
Good location - close walk to two subway lines, across the street from a large grocery store, two malls within a stone's throw, and felt safe enough walking around.
Good view - had a room on the 35th floor with views across the city
Doorman were very friendly and happy to provide directions, breakfast recommendations etc (would normally ask a concierge, but they were either not there, busy or it was inconvenient (concierge is on the second floor, exit to street is first floor)).
Room was a decent size and well laid out with neutral modern decor in good repair
Fridge was empty and cold so I could store my own food and drinks

The Bad
Room description online states shower/tub combo. Arrived late at night and room contained only a shower. Trudged back down to front desk, where after 15 minutes of key tapping and consultation was told they weren't sure which rooms had bathtubs. But that they didn't have any anyway. Seems odd. Was told by the duty manager that they would arrange a switch the next day. Fine, whatever, I just want to sleep. Following afternoon I head back to desk (having left early morning before breakfast) to get new room assignment. Was met with puzzled looks, and told no notes were left for them, and they were out of bath tub rooms, and should have come back earlier. Not a happy bunny, plus I had also, by this point, discovered that rooms with connecting rooms have zero sound proofing. Not bad neighbours, just three men having normal level conversations, of which I could clearly hear every word. Figured it would be sorted with the room move. Now no room with tub, but also no room without connecting door either (allegedly). Also told by front desk staff that the room description didn't say it had a tub. Why oh why do you argue with the customer without being 100% sure as it took less than 30 seconds to pull up the room description complete with shower/tub text on my phone. Eventually got a small credit on the bill from the manager. Will see if that posts (prepaid rate).
Linens were not changed during my stay, and sheet had tiny holes in it, very poor of housekeeping to use a sheet in that state on a bed. Floor were also not vacuumed during my stay. Towels were not replace and I had to call to ask for some (which were, to their credit, delivered very promptly).
Items requested via the app were not delivered - why bother allowing guests to let you know they need more conditioner on an app if you just ignore it?
The air conditioning / heating would not shut off, the 'off' setting (digital display) was the highest fan setting of them all. Consequentially have sore throat from the over air conditioned room.
The bathroom door did not completely close. It was a strange sliding door arrangement, double doors in a single door gap, but they wouldn't completely meet in the middle. Not an issue for me, but if you were travelling with others the lack of privacy may be bothersome.

The Unacceptable
When I went back up to the room I discovered that the connecting door had been unlocked (presumably by the maid?) and not only unlocked (both the turn bolt and the security 'chain' thing), but left ajar. The door on the other side was shut, but have no way of knowing if the men in the room next door had discovered same on their side and closed / locked theirs or the maid had relocked that side. Literally leaving my room open to other guests is utterly unacceptable. Luckily my neighbours were honest, and nothing was missing from my room. Front desk agent said 'oh' and nothing more when I told him.