Stayed here for 5 nights on business/pleasure.
Really not much to fault at this place.
I find the "American manner" a bit odd and just cannot avoid feeling it is insincere and somewhat sycophantic. Sorry to all the Americophiles!
Putting this to one side, however, I really enjoyed everything about my stay at the Viceroy. Exceptionally helpful concierge, efficient and unobtrusive ski valet, complimentary and near instant transport around Snowmass, sensational spa and a great place to unwind.
Rooms were clean and well appointed, good turndown service. The only downsides to the room were lack of tea and milk, temperamental TV remote and noisy humidifier.
Breakfast was tasty and good quality (not masses of choice, but I prefer quality to choice). It would be nice if there was a "light" breakfast option. The first morning, I only had a bowl of fruit and cup of coffee, but was still charged the full buffet price (I didn't question it, I assume that's the rules).
Not cheap, but worth it. As I like to say "Pay peanuts, get monkeys".
I would definitely recommend a stay here.