I got what I thought was a good rate with Orbitz - 90 euros for a standard double - but was very disappointed. The main problem was no air-conditioning.
When I arrived, they put me in a single room. After showing them my voucher as proof (this was necessary), they immediately moved me to a double. It faced the interior (with no air-con or breeze), so I asked to be moved. They graciously moved me to an exterior facing room, but it faced the noisy, hot side of the hotel (Burgstrasse). This side gets the sun almost all day (and is over the main street). When I asked them for the cool side (Domgasse), they again graciously moved me.
The room facing Domgasse was cool, which is important because there is no aircon. Luckily, I also had a balcony (only three or four rooms have them). The room was relatively spacious and comfortable, but very basic for a 4 star hotel.
Overall, I enjoyed my stay, but would not stay here again. If you choose this hotel, ask for a room facing Domgasse. There is no aircon, and many (most??) rooms face the interior. Rooms facing Burgstrasse are very hot and noisy.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC