We spent one night at the Westin on our way from Vegas to San Francisco. We arrived mid afternoon and spent time wandering around the village and taking a gondola trip to the top of Mammoth Mtn.
The staff was friendly and willing to offer suggestions for activities and to give directions. The room was nice and had a kitchenette and fire place. The bed was very comfortable and the room was clean. The hotel was just across the street from the village-- and I loved the village! Cute shops, very family friendly and plenty of restaurants to choose from. It was a quick, but great stop for us on our vacation!