The apartment is fantastic for a single person or a couple. It is perfectly situated, very close to the Grand Central, and about 10-15 minutes walking from Times Square or Central Park. Everything you need (shopping, supermarkets, restaurants, transportation) is nearby, and the doormen are nice and helpful if needed.
The apartment is small, about 30 m2, but more than enough for somebody spending some days or weeks in New York. It is fully provided (kitchen, bathroom, closets) and has a small nice balcony. Perfect is you don't want to have lunch or diner everyday in a restaurant! There is a nice TV and the WiFi Internet connection works perfectly. The bed and the couch are very confortable, and the heater works without any problem. You really feel at home in this apartment, we have stayed for longer than four weeks and when leaving we thought we were leaving "our home in New York"!!
Daniel has been very kind and helpful during all the time we stayed in his apartment. We couldn't meet for some hours but you feel you already know him. Absolutely no problem in our case, but if something had been wrong, we had the impression that he or the doormen would have helped us.
If something bad has to be said, the only thing coming to my mind is just that some elements of the kitchen or bathroom are not new and don't look "nice", but they all work perfectly, this is a an "aesthetic" issue. Personally, we didn't care.
In conclusion, an apartment I will certainly and honestly recommend to any friend or relative going to New York. Thanks Daniel for your kindness and being so helpful!!