Stayed here with my girlfriend during the busy Christmas to New Year's period and loved it. The service started immediately when our airport shuttle mistakenly dropped us off at the Canyon's Grand Summit instead of the Escala. We called the front desk at 11pm and they sent the private hotel SUV to pick us up within 10 minutes - complimentary.
All the facilities at this hotel are immaculate and very modern. Starting with the fire pits outside the entrance to the modern lobby and bathrooms. Even though we were here during a busy period, the elevators were never crowded and we rarely saw other people in the elevators. Definitely a nice secluded feel with staff always there when you need them.
The ski valet is located on the second floor of the main building and even has a ski rental shop built in. All we had to do was take the elevator down one floor to change into our ski boots and we walked right out to the slopes where our skis were waiting. It's a short ski down a semi-private hill to the Sunrise lift and you're at Canyons! Truly ski-in, ski-out. Lift passes for Canyons could also be purchased right in the lobby.
Throughout our stay the ski valet was on point, bringing skis out to the car on the day we went to Alta. Rooms were very well appointed and spotless. Service was generally excellent all around and the restaurant served great food with excellent service. We had one issue with our food one day and it was very professionally resolved by the waitress -- again, the kind of service we would expect from the Hyatt brand.
This resort is also close to all the bars and restaurants located at the Canyons resort. Just a 5-minute walk across the parking lot. There is also a free shuttle leaving every hour to Main Street for those who want to visit downtown park city.
Overall an excellent and relaxing experience. We're definitely coming back next year.