Service at the Park Hyatt was good. The rooms are not trendy; they're much more business-like but still exceptionally clean. It was kind of annoying that they didn't come equipped with a dvd player but a quick phone call fixed that within 5 minutes. The location is great, right next to Yorkville and a stone's throw away from great shopping and dining.
We didn't take advantage of any of the facilities, but the breakfast was to die for. Although kind of pricey ($25 a plate), I would definitely come back for the food alone! As for everything else - the lobby is nice, valet parking, etc. but nothing in the room itself really "wowed" me.