This listing description is very accurate. Joy welcomed us to the unit herself and provided us with plenty of information. She was very responsive throughout our stay. I went to this appartment to stay for about a week with my parents and sister, and we had enough space for the 4 of us. The apartment has a well-equipped kitchen with all the basics like coffee and other goods available to the guests -- which was pretty good :) Shower was good, too; heating worked just fine. Cleanliness was impeccable.
The mattresses are just ok; unfortunately the building and the street are not the quietest place on earth (it's NYC, afterall). So I wouldn't say this is a great place for one who needs good rest (which usually is not the case in NYC...), but overall is an amazing place for everything else!
I highly recommend this apartment for parties (4-6 ppl).