I have to start by saying that I don't have high expectations for places in NYC within my preferred budget. I know that spaces will be small and a little worn/old, so my priority is that they're clean and safe. Jay's place was half the price of any hotel that my friend and I were looking at, and since we only needed a place for a night, it was a good deal. We came to town for a musical and were within walking distance of our theater, plenty of dinner spots, and Penn station where I caught the train back home. So I'm grateful for the ease of the stay.
That being said, as other reviewers have mentioned (I didn't read enough reviews in advance), this is a studio NOT a one-bedroom, not even close. My friend stayed in the bed, which she said was comfy; I pulled out the couch and it was okay, but not ideal if you have back issues - it's definitely thin and you can feel the bar that bends it flat while you lie.
The place was generally clean but when I pulled out the sofa, there was definitely a lot of dust on the floor between it and the wall. (Something that wouldn't get noticed if you weren't pulling out the sofa, but since it's clear that folks use it as a secondary bed, should be attended to.)
The bathroom door could use a coat of paint, and there are some peeling spots in the unit. The shower is not meant for short people. The stall is small and given where the shower head sits, I had to stand under the flow of water because I couldn't stand in front of it, unless I wanted to shampoo my hair as well and even then it would be pouring directly onto my face.
One of the front windows didn't feel secure, and I'm not sure if it locked from the outside. You can hear the band and music from the bar downstairs, but they wrapped up on a Friday night at 1:30 am. Then you just have to deal with NYC street noise, but we wore ear plugs and were able to sleep.
Upon check-out, you are instructed to leave the keys inside the unit, but there didn't seem to be a way to lock the apartment without a key. I guess if the owner is fine with that I should be, but I was concerned that someone could enter the unit after we checked out and take something/do something and we'd be held responsible for it.
Overall, if you're coming to NYC to be in the city and not to spend a lot of time in the apartment, it's a great deal. Or if you're a tall person traveling alone you won't need the pull out couch or have issues with the shower. It's a decent place for an affordable price. I just wish the host(s) were honest about the size and included more pictures in the posting.