I've never stayed at a Hyatt before, but I have stayed at the Waldorf in Park City.
The Hyatt definitely is a more 'relaxed' hotel and not as pretentious as the Waldorf.
The Hyatt seems family friendly, although it was just myself and my partner staying here, there were many families with children around the hotel and pool.
The hotel staff were all very friendly and helpful and made us feel welcome.
Our room was on the small side and poorly lit. All amenities that one expects were provided including bath robes. Most importantly the bed was comfortable and room clean.
The onsite facilities included a pool, hot tub, gym, sauna and steam room.
The breakfast (either buffet or a la carte) was to a high quality although service was slow or non existent.
All in all I feel this hotel can improve but I would still recommend it as the location is great, facilities are many and rooms comfortable.