Pros: Very close to the haupbanhof (main rail station), the Messe, walking distance of the Main river and the Römer area. Free wifi (at least for me, I didn't explicitly buy it as part of my room package). Comfortable room. Modern bathroom. Nice breakfast buffet.
Cons: The location is a blessing and a curse. As has been said previously, the hotel is in the red light district, so sex clubs and drug usage are in evidence. The area does not feel safe, so if you are of a nervous disposition, it would be better to avoid. There was no air conditioning, but a large fan was provided in the room. This was a problem though, as if the window is left open, the noise in the Kaiserstraße below, can be loud.
The staff were very friendly and helpful, and helped me efficiently and courteously on a couple of occasions when I required assistance.More