Our family of five stayed at the Westin from 4/5/10 to 4/10/10. We had a wonderful time. The spring skiing at Mammoth was incredible. The Gondola to Canyon Lodge is right outside the hotel. So you are skiing within minutes of walking out of the hotel. Even better - ski storage is free at the base of the Gondola for Westin guests, so you don't have to hassle with your skis until you are about to get on the gondola. We had our car with us, but never used it until the last day when we drove to Eagle Lodge. Everything we wanted was within walking distance from the hotel. We ate at restaurants in the Village (right across the street) several times and there is a Starbucks there as well for my morning latte habit. We ate at Gomez's (mexican food) - it was good with very friendly service, the Smokehouse, which was also good with good service. Our overall favorite was probably Lakanuki (also the cheapest). My kids LOVED the $5.00 happy hour special Buffalo wings, and I had one of the best Mai Tais I've ever had and it was only $3.50. The pulled pork sandwich was good and we also had some good salads there as well. We also went to Ben & Jerry's for icecream a couple of times and the Rocky Mountain Chocolate Co. for caramel apples. We did eat at the hotel's restaurant, Whitebark, the first night. It was good but not great. Pretty standard for this type of hotel.
There are some things about the hotel that I didn't love. The rooms are pretty small. We stayed in a 1 bedroom "suite", which was the smallest of any Westin we have ever stayed in. The bedroom was fine, but the bathroom was tiny. It was a shower/tub combo and it didn't even have the standard Westin Heavenly duel headed shower. The sink/vanity was ridiculously small - like something that you would find in a powder room. There was very little room to put any of your toiletries out on the sink. The room has what they call a "kitchenette", which I think is a stretch. It has a microwave and two burners. The refrigerator is small and full of honor bar drinks. We had just enough room to fit one gallon of milk and a couple of bottles of water. Luckily I had brought an ice chest with us in the car, so we filled that up with ice and could store our doggie bags from dinner, etc... and some bottles of water. The fridge did have an unusually large icemaker for it's size, which came in handy for filling up the ice chest. The hotel also has a laundry room for guests, which we used to wash ski clothes, etc... and I very much appreciated that feature. The pool area with two hot tubs was nice, and we went in the hot tubs several times.
My two boys (10 and 8) slept in the sofa bed, which when pulled out, took up the entire living room. There was absolutely no extra room for a roll-away bed, so my 5 year old had to sleep with us in the King bed. Next time I will definitely go for two standard rooms instead of the suite, as the suite just wasn't big enough. We paid with Starpoints - so it would have been the same cost. Overall, the hotel is very nice. It is extremely clean and we had good, friendly service from every person we encountered. The location absolutely cannot be beat - but everything is just a little smaller than other Westins, from the front entrance, to the lobby to the rooms. The only negative about the location, is the approx. 120 stairs that you have to go down (and then up) to get to the Village or Gondola. They were a total pain and everyone in our group is young and in good shape. If you were with an elderly person or someone with some physical limitations, it would be very difficult to go up and down those stairs. An escalator or moving carpet would be a huge improvement. We would definitely stay here again because it is certainly the nicest hotel in Mammoth, and the location is extremely convenient. The hotel also has a shuttle, that will take you anywhere in the area that you want to go (it is included in the $25 daily resort fee) - However, we never used it, but saw people using it. I believe it will even pick you up from the airport - which is something that we plan on utilizing next time. The positives definitely outweigh the negatives here, and you will have a great vacation if you stay at the Westin Monache.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.