We were able to trade our timeshare for a week at the Sheraton. Our timeshare was a 2 bedroom villa with cozy decor. Not as many amenities on site as the Westin but we had a full kitchen and washer and dryer in our unit. Charter Sports is located in the building if you need to get your skis/snowboards waxed. There is gym, sauna, and hot tub (inside and outside) located on the 7th floor. A shuttle comes every 15 minutes that will take you over to Beaver Creek Mountain. It picks/drops off right in front of the Sheraton. They have very helpful concierges and offer a welcome BBQ dinner every Monday night. They also provide garage parking which is nice on those really cold days.
The rooms are very comfortable and clean with flat screen tv's in the living areas and bedrooms. We stayed at the Westin last year which was gorgeous but we really enjoyed staying at the Sheraton as well. It's a different atmosphere - very cozy vs. the modern feel of the Westin. We would definitely stay here again. One downside to the place is that the main area of the villa got a little warm. The smaller one bedroom on the other side seemed to stay much cooler. But we easily adjusted by turning on the fan or cracking open the sliding glass door to the porch. And although the couches look nice, they aren't super comfy.
The location is great too - plenty of restaurants within walking distance if you don't have a car.