Best place I've stayed in Germany. It's a small efficient single room facing the main street. It can be kind of noisy at night in Frankfurt, but the window at this enough to suppress most sounds.
This hotel is set up like a British establishment... with a kettle, cup, tea and sugar. There's a closet and safe for your valuables.
I find the bed very comfortable, they don't use top-sheets in Germany, but that's okay with me.
Breakfast is included. It's a healthy buffet with eggs to order. We were upgraded this weekend and that made this vagabond very happy. Also, the well-stocked minibar was free. That was a surprise. I rarely partake of minibars, however. (I don't know if it's alway free.)
The location is ideal. A short walk from the central train station and an even shorter walk to regional buses. There's a tram stop across the street.
Amenities in the room include big tv, which I almost never use, free wifi, air conditioning. You will use your key card to power the room.
The staff is very friendly and helpful, also.
I think you can tell I'm very excited about this hotel. Hope you can visit Frankfurt and stay here.