We enjoyed our three day stay at the hotel. Our primary purpose for our trip was to visit as many Documenta venues as possible and this hotel proved convenient for that purpose.
Our check in was routine and there were no surprises. The staff was very helpful in providing information for getting around the city. Our room was about normal size for a European hotel room and the bathroom was satisfactory (good shower size). The room was maintained well by the service staff.
The room and hotel has no air conditioning. We discovered this was not uncommon for older hotels within the city. Since we were visiting in late June, it was warm. We had to maintain air circulation by leaving the windows open. There were no mosquitoes but the street in front of the hotel was cobblestone and cars made a lot of noise as they drove by. Fortunately, we were there over a weekend and there was relatively little traffic then. However, it was noisy on Monday morning.
The breakfast is very good, perhaps, one of the best we had during our trip. Don't miss it.
The staff was very helpful in providing information on using the city's tram (trolley cars). The 4 & 8 lines stop less than a block from the hotel and both stopped at the main Documenta site (as well as the Ratskeller). Although we didn't use other lines, it appears one can access a large portion of the city simply by using the trams.
There apparently is a public parking lot nearby the hotel but we found nearby street parking (weekend).