Room had no air-conditioning, it was on the second floor and facing the street. To make matters worse, the window would not close - and yes, I know how to operate a German window :) . Room seemed clean until I stumbled upon a cockroach on the bathroom.
Breakfast was OK and the location was very convenient. Wi-fi worked great - the router was right in front of the room.
All in all, I would only return to this hotel I was completely desperate. Not recommended.
- Frankfurt Tourist