Way uneven
Looks are deceiving at the Rivercenter. The lobby is inviting, but get to the front desk...and...room (king) is not ready but I can have a double. No thanks. Is there king availability on the concierge floor? Yessir! Only $52/night additional. I am exhausted and want to get settled get to 27th floor, no sign that it's concierge floor and no limited access as I really want quiet. I open the door and it's two doubles...and it is SMALL!! Should have gone back down but did not want the hassle. Temp control works fitfully, small TV screen, small bathroom, but the room is at least clean.
As stated in other reviews this is a convention hotel so there is plenty of noise in the halls. Catering staff was better than average, Housekeeping was surprisingly friendly and courteous, the bellman when I departed actually took the bag and loaded it into the cab. The check out was another matter. There is no explanation for two people at the height of checkout to stand there and talk to each other, look at the computer screen, talk to each other, go in the back, come out and continue fiddling around, answering the phone and doing everything but checking people out of the *&^$# hotel!! The line had 10 people in it and didn't move for a good 10 minutes.
And then there are the elevators...everything written in previous entries is absolutely true. These are the slowest elevators I have ever encountered. I waited no less than 15 minutes twice and more than 5 minutes almost every time. It is maddening!! I did not get the pleasure of the parking fee, but after paying and additional $100 for a standard room, for which I got a buffet breakfast, I asked at check out about the situation and received a blank stare after that extended wait in line. And the lunch in the house cafe was $23 for a sandwich and a beer. 
While I am a Marriott Gold...and typically enjoy the dependability and occasional surprising service and expansive room, I will never stay at this property again.