The apartment (especially the bathroom) was not clean. The bathtub was already dirty when I arrived and in eleven days the bathroom was not cleaned any day. Even in the AirBnB we payed 35€ for cleaning.
However, in other aspects it deserves a very good score: it is a spacious duplex with terrace, gym, ideal location, quite cheap according to NYC's rates and youthful and pleasant hosts. They are generous and they offer tea and coffee. Although from 10 to 8 you must be silent.