I went to this hotel in order to attend some seminars, so I cannot rate the quality of the rooms. But what I saw was pretty good, and the service was great. My only complaint is that there wasn't much food during lunch, there was a lot of people and the food vanished instantly. But maybe this can be more a logistics problem from the event organisers, but overall it was a great experience.
Room is nice, furniture has a minimalistic touch which I personally like.
The resturant is excellent: not many dishes you would call traditional, but the quality is there.
Parking your car is way too expensive (15.5 € per night) but the biggest thumb down is for internet connection: as many reported, it's not free, and that's a bummer.