We had a great stay in Fang's place!
The apartment is perfect: spacious enough for 2, comfortable, well equipped and very clean.
The common spaces are also very good and the Rooftop is exceptional with a beautiful view overlooking the center of NYC, beautiful amenities and very comfortable facilities: to spend some memorable evenings.
The location is also very good: in Hell's Kitchen with lots of small restaurants or bars (it's even better thanks to the advice of Fang) and very close to Times Square (10 minutes walk.) The subway is not far away more, but the apartment is so well placed that you can do everything on foot!
What to say about our host: Fang is a very nice and considerate person. He took the time to visit us and give us good advice and the recovery of keys was really easy with a small guide in picture to easily reach the apartment.
Conclusion: thank you Fang! When we will return to NYC, we will definitely stay at Fang's place - no need to look elsewhere!