The location is superb. It's two blocks from St. Stephan's, and there are a lot of things to do close by.
My problem with the hotel is the design, particularly with the rooms. Everything is ultra-modern, stark, all glass and metal and stone. The shower is literally a glassed-in area next to the bed. For people who desire a little privacy, you get it only in the fully-enclosed toilet room, not the shower and basin area. It took a few minutes of searching to find out how some of the lights work. For instance, the lights over the shower are controlled from a glass touch switch array on each side of the bed's headboard, not from anything next to the shower. I was able to make the air-conditioning work, but the controls are nothing like "set the temperature and the fan speed and let it go."
We didn't have a lot of interface with the staff, but they were courteous and helpful. The breakfast had enough variety that everyone can find things to fill up on. The elevators were fast and convenient. The whole hotel was very clean.
If you like modern, this is your place. If you want something a little more traditional, maybe not.