Good stuff: This place was really nice and spacious! Everything was very clean, and Catherine/Bryan were responsive whenever we had questions. We were apprehensive about the neighborhood at first, but it really wasn't that bad and it's easy to get on the subway into Manhattan. There are also a couple grocery/convenience stores nearby to get everything you need. It was really a great place for a group (we had 5 people) and we had a great time!
Minor complaints: One of the nights we were there, we could smell the neighbors smoking and it was a little annoying, but I'm not sure if the hosts could really do anything about it. I also felt that the bed in one of the rooms was too soft and I was kind of achy after sleeping in it. You can hear the train go by at night, but it is quiet enough that I thought it was just the wind at first, and I don't think it would bother anyone unless you are a really really light sleeper.
Overall: Great! Affordable, very comfortable. Would recommend especially to anyone mainly wanting to check out Manhattan but not pay Manhattan hotel prices.