I stayed at this hotel for one night on a recent trip to Germany and was very impressed by this very modern clean hotel. Every thing was comfortably designed, the room was spacious and quiet and the bathroom extremely well appointed.
The location was good - right across from the KDW. For 66 EUROs per night I think this hotel is great value. I didn't try the breakfast which is 10 EUROs extra.
The only downside is that since the hotel is in a relatively central location parking is very expensive - take this into account if traveling with a car.