First, I have to share that we got a great deal on this hotel. I wanted to stay there on my last trip to Chicago a few years ago but didn't want to spend the money. This time I chanced into a 50%-off rate on the hotel website and booked a Select King. Since I spent less than $300 on three nights please keep in mind that I could have had a different view had I spent full price.
The location is perfect and the Carbide and Carbon is impressive if you are into architecture. You are so close to Millenium Park that it's easy to take a quick walk over at sunsets and watch the skyline change on the Bean.
We checked into the hotel around 10pm after a flight from the West Coast and my first reaction was that the place was way too trendy for us -- we were wearing polartech and hiking boots. (But that was the only time I felt this way because we used the revolving doors straight onto Mich Ave after that and didn't go through the lobby again.)
We were told there were only two Select King rooms left, one on a high floor but next to the cleaners' closet and one on a lower, traditionally renovated floor without rock memorabilia. We opted for the lower floor -- the 13th, I think.
The room was fantastic, on the northwest corner of the hotel with a view on one side down the river to the Merchandise Mart and on the other side down Mich Ave. Not a lot of space in the room but enough for two people. Yes, it bothered me that I couldn't put much in the frig because of the mini bar set up, but I also didn't ask the hotel for an alternative so there might have been one.
The bed was very comfortable with a pillow-top mattress and the bathroom was huge. We did have a graphic of the Beatles in the bathroom and a mirrored pic of David Bowie in the bedroom so our room did have a bit of a rock feel to it.
And the room was quiet from inside noise! Of course there were sirens and street noise, but I didn't hear anything from inside.
I know the city well so we did our own thing and didn't eat in the restaurant, go to the bar or ask the concierge for help so I can't comment on those.
Overall, I would definitely stay here again, especially for the price I paid. It's a great hotel and you can take the 'hard rock' side of it as seriously as you want to.