I had done my home work and was perfectly satisfied.
If you prefer a sleek, contemporary 4 diamond hotel, you will not be happy at the Hotel Buckminster. It's an older property - historic, really - and somewhat dated and worn. While it was not spotless, I found it to be generally clean;housekeeping was friendly and kept our room in order for the three nights we were there.
My adult son and daughter and I selected the Buck primarily because they offered a two-room suite, the rates seemed reasonable, and the location is good - Kenmore Square, near the T and Fenway Park.
We flew a red-eye from California and arrived at the hotel at 9 AM; not surprisingly, our room was not ready, so we left our luggage and visited Fenway for a tour. We were quite pleased when Kevin on the front desk called to tell us we could check in. We were able to unpack and rest before returning to Fenway for the game.
The Buck has train tracks and the Mass Pike behind and Kenmore Square in front - noisy. Our rooms had doubled pane windows; not sound proof by any means but we had no complaints about the city sounds that filtered through. 
The "breakfast" is great, so long as you usually start your day with coffee, juice, fruit and pastries, muffins or bagels. It's an adequate starter, though, and Dunkin Donuts, 7/11 and several other places are nearby if you want more.
The Green Line is right there, or you can walk Comm Ave or Newbury Street to the Pru, Copley Square or Boston Gardens in 20-30 minutes.
Wifi is available for $9 per day.
Everyone we spoke to at the desk was friendly and helpful.
If you can over look a few deficiencies, it's acceptable. I give it a C+ / B- overall, but see it as a good value.