This Hotel was better than expected considering the price, most of the staff was very nice. They had an elevator. Parking behind was ok, they would have locked up the car on request, the red-light district is evident, but there are always people on the street and I didn't feel that it's dangerous. The receptionist was very nice and we looked at 3 rooms. All of them were renovated and clean. Water pressure everything was there. The room was clean. The mattress was clean, but too soft for me.
There were a few broken light bulbs that were fixed the next morning. The walls are very thin and if you are sensitive you can hear a lot, the windows had shutters that you should really use.
The walking distance to the main shopping street "Zeil" and the Train station "Konstabler Wache" makes this Hotel a bargain for a few days. I wouldn't recommend to stay here with children, but for a quick trip or just to get around the City it's perfect. The Zoo is close by and to walk to the Main River for a beautiful view of the Sky line is just 10 min.
I would go back there, not during the fair, but when the city is quite, free wireless internet was working excellent.