I just spent an hour there a couple of weeks ago. It was supposed to be a night - perhaps even two - but I decided to move. The killer for me is that they had (temporarily?) destroyed their fitness center. But the Regency Club was gone too, and the nice breakfast previously offered to Diamonds was reduced to coffee and a donut (this is an assumption; I was gone long before breakfast). I got a AAA voucher for food, but the value in the overpriced restaurant was minimal to me...and so into the trash.
Still, the place was fine, clean, and I was treated okay. (I used to spend 50 nights a year there.) There was - on this particular day - enough parking, so I wasn't shipped to the Great America parking lot, a fifteen minute walk away. (That happens too often.)
Your interests may vary, and you may have a splendid time at this property.