I have stayed at quite a few Hyatts (been Diamond for many years). The Park Hyatt Zurich is the finest I have stayed, especially being in a city and not a resort. My wife still says the yogurt served at their breakfast buffet is the best she has ever tasted. We were upgraded to a suite, and,truly it took us a couple of hours to figure out all the technical buttons and gadgets. The staff could not have been more professional. The front desk staff spoke a variety of languages...English, French, German, Italian, Spanish, etc.
Zurich itself is a very intriguing city. Quite a nightlife area walking distance from the Park Hyatt, and it is in the middle of the financial district. We thoroughly enjoyed the city and the Park Hyatt.