This is a good and well-run hotel. We found service to be generally efficient and warm, the rooms to be comfortable, and the restaurant excellent.
Our one issue with this property is that it's branded a Park Hyatt, and (at least during peak season) attempts to charge Park Hyatt (or comparable, e.g. Four Seasons) level rates. Having previously stayed at a number of fantastic Park Hyatts around the world (Paris, Tokyo and Seoul spring to mind), the PH Beaver Creek didn't quite meet our high expectations of a PH property - particularly in terms of overall feel, truly top-level service, or room and bathroom fittings & amenities.
Otherwise, it remains a perfectly good hotel, and very convenient for the skiing - which was the primary focus of our stay.