In general, everything was nice - apartment is quite big, well equipped, comfy bed. Location is superb! The building has a nice small gym and a laundry.
There were some troubling issues, though. When I arrived, I was asked to pay New York City tax of almost 1,000 $, which was mistakenly charged 13 (!!!!) times. I got everything back, but it wasn't a pleasant experience.
Second issue - internet. A month and a half out of three I spent there, most of my time I was busy connecting two I-phones and a laptop to WiFi. When I was by chance successful, the connection was so slow that I couldn't even check my email. After month and a half of everyday complaints the WiFi became normal, so I had no problems anymore.