Not worth the price, at all
I don't have terribly high standards for hotels...a comfortable bed, a clean room, and peace and quiet, and there's three stars right there. 
The Hilton struck out on two out of three of these: the beds were rather stiff and uncomfortable, and the guests at the hotel really loud and management seemed to care little. We were woken by three fighting, screaming teenagers outside our room at 3 AM. We called the front desk who said they were sending security. We waited 10 minutes and ended up confronting the (very drunken) girls ourselves. 
We were using points; had I been paying out of pocket this probably would be a 1. The pool and fitness center were nice, but that and the cleanliness are about all I can give them.