The apartment is well equipped and during our stay the airconditioning kept it at a comfortable temperature. It is located in a quiet and decent neighbourhood close to Central Park and close to several metro stations (few lines directly downtown). There are also 2 good mountainbikes available that we used to explore Central Park.
On our last day, we could store our luggage in the building and enjoyed the last day in New York. Giancarlo responded promptly with helpful suggestions when we had questions.
When we had to leave for the airport, we could easily get a yellow cab at the corner of the street.
For us (family of four adults) his apartment was the perfect place to stay and to start our exploration of New York from!
Perhaps only small disadvantage is that it is located at the 4th floor (stairs to climb after a long day), but as a reward when opening the door we entered the airconditioned apartment.