Another option is to stay at the Peruvian
in the dorms -- the rooms are tiny, but you're slopeside and 3 meals are included per day -- I payed just over $100 over new years and only shared the room for 3 of the 5 days.
The Peruvian's a classic -- no TVs in the rooms, family-style common rooms, shared bathrooms, friendly guests and staff, and you can ski right out to the slopes.
Meals are included -- breakfast and lunch are buffet style and dinners are nice, though you have to get reservations early. You can save on a car rental by taking a shuttle up there, so by the time you get hotel + car + meals, it's a damn fine deal.