We stayed for two nights in December to visit the Christmas Market. Good location – 5 minute walk from main train station. Very helpful staff – from the bellman to the desk clerk, everyone was friendly and accommodating. I asked for a quiet room in the City tower and received a room at the corner of the building on the 20th floor that had an excellent view of the river and the city. The room was large and very clean. The bed had a slight slope to one side, but was still comfortable. It was snowing outside and the entire hotel was pretty warm. We turned off the room heater for the entire time we were there and still had to open the window slightly to keep the room at a comfortable temperature. We never saw or heard anyone on our floor - it was very quiet. The price was slightly below comparable accommodations. I would return to the hotel when in Frankfurt.