This was my first time to Boston and the only negative I can find is the host. The advertisement is a lie as the only available area for you is the front bedroom. Communication was poor from the beginning as he did not respond to my message for more than a week till we were a hour outside of the city the day we came. The host was incredibly rude in the sense that he did not make us feel welcome, and continued to criminalize us. At one point he accused us of using his second bathroom, and in the morning was angry with me when my friend knocked on his door, a half an hour prior to check out to come get me. I apologized that my phone was dead, but this continued to make him be incredibly inconsiderate.
Pros:
Cheap
Nice neighborhood
Cons:
Rude and unwelcoming host.
All that is for rent is the small bedroom and the bathroom. Don't go to the living room and don't to go on the balcony.
Provide your own towels and bath supplies. As the host will make you feel like you're overstepping you're single room boundary for using them. Or my personal favorite, try to take the provided bar of soap and put it in his bathroom to say you were in there.