I stayed at the Park Hyatt for two nights in June. It's a beautiful hotel, as you'd expect from a Park Hyatt. It is serene, the furnishings are very tasteful, the service was excellent. I enjoyed the breakfast at the Blue Duck Tavern (the hotel restaurant) so much that I did something I almost never do -- I went back that afternoon and had a drink and an excellent course of cheese and italian meats before heading out to a business dinner I had to attend. The sugar cookies from room service are also excellent.
Only caveat: if you're coming SOON (as in during June/July 2014), ask about the construction next door. The jackhammers woke me up at 7:00am both days and it was incessant all day. Luckily I was out of my room all day anyway or this would have been a real problem (as in, had I planned to be in my room working). Other than that, great hotel.