Just yesterday I have asked few of my NYC friends about hotel there during winter break. The followings are some information you may need to consider.
1. Hotel in NYC could be from $100-200 per night.
2. Near by Flushing area hotel managed by Taiwan owners may cost from $50-60 or more per night.
3. Sublet price can cost about $600-1000 per vacation. (for example $600.00 from 12/24-1/11 or $800.00 from 12/16-12/30 both plus $200.00 deposit) You will need to contact right away since many people are coming to NYC for vacation.
4. There is no need for renting a car since you are in NYC because people in NYC they love to walk and take subway!
Please contact me if you want to know more detail about winter break in NYC.