This was a nice place where I stayed 2 nights alone.
I had room 44 which was very small but with all amenities (fridge, coffee maker, AC, microwave).
The host was reactive when the power shuted down on the morning : it was repared in the hour.
Bathroom is shared with other rooms (around 8) but was clean with soap and toilet paper.
Location is very good, 3mn walk from Back Bay station (Orange line and commuter train) and 5mn walk from Arlington (Green line).