We were a group of 6 people, 3 kids (4 to 10 years old) and 3 adults. The apartment was great. It was clean, the room are spacious (especially for NY). The kitchen is equipped and we cooked at home for the kids a few times which was perfect. There is only one bathroom (not a good idea if you are a party of 6+ with friends spending hours in the bathroom) but the Italian shower is nice and spacious. We could hear a little bit the neighbors as the house is quite old and the floor / walls are not very thick, but they were quiet so it did not bother us (and good luck if you want to find a place in NY where you do not hear a thing !!...)
About the neighborhood, it is very quiet (again, NY standards), and there are plenty of shops and little restaurants around.
Also, there is a 7 train station just one block away and you are in Midtown in 15 minutes (truly) which is wonderful. The 7 train is also very convenient as there are so many direct connections with other lines on Manhattan.
The host was also very helpful and responsive. We had a great time !! I would recommend this place without doubt to stay with friends, or as a family.