We enjoyed our Christmas in NYC! The studio was exactly as described in a great location and a great fit for our family trip (5 of us). As other reviews stated if you are not used to radiator heat the squeaking sound can throw you off because it sounds like a baby mouse but we were able to sleep fine and the walls are fairly thin so if people came in late or were leaving early and were noisy you could hear it very clearly. However, that is not the fault of the host, just a reality.
We really lucked up because of the holiday we were able to park right on the street but it may be something to really plan for at other times of the year when commercial parking takes up most of the street area for a good part of the day.
We were in walking distance to so many things, so I would definitely recommend it and book it again for a future stay.