I hesitated between average and very good because of the noise which happens to be a problem in NYC regardless of sound proof windows. But you do not need to hesitate to stay at the Warwick if you need a pleasant stay in New York. The location is super!!! Just in front of the MOMA (which has a free admission on Fridays afternoon). And the architecture of the Hotel is very European and refined. I did not have time to dine at the restaurant which apparently has a very good reputation. As for the room, it was comfortable and big. I did not like the bathroom though which had not real bathtub (although it was presented to me like one). The hotel staff was very efficient and responded quickly to my demands. Doorman always smiling, what else can you ask?
The rooms on the 6th Avenue are nicer than the ones in front of the elevators. However these rooms can be noisier. Had to change from the 8th floor because of the noise. The room in a higher floor was much better when it regards street noise at night.