Stayed Sunday to Friday on business and had no problems. I would agree that it has little style, but it is an urban hotel, just a few hundred meters from the town centre.
The rooms were very clean, the shower was powerful, TV was a little on the small side. The beds seemed very narrow although it was adequate for me.
Being a veggie, I was concerned about the breakfast, especially with it being in Germany-sausages and all that. But it was fine. There was a broad selection of food.
I couldn't fault anywhere downstairs. Restaurant, although pricey, served very nice food. The bar area was small and not very intimate. The staff that I came across seemed friendly enough.
I believe there was a sauna somewhere in the hotel although I didn't get the chance to use it. A pool would have been nice.
The parking was fairly limited and we struggled for a space at times. There was an underground garage but was always locked. Perhaps they open it if asked?
There seemed to be many business guests there.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC