This hotel is disgusting, smelly, old, not maintained properly, only 1 socket in the room, the bathroom has very bad smell. the room is wretched. Does not worth the cost at all. I stayed 2 hours in the hope to get refund , and I left the room and ordered a taxi and went to stay at Hilton Koln, since it was impossible to remain in this room, and I hope to get refund. Although they refuse.
I think you are responsible for what you offer to clients and this hotel is horrible, although it gets some good reviews from clients, its not the truth. GO and check!
I expect to be refunded!