First the good, lovely location by the Rhine with nice walks along the banks, 5 minute walk into town. Fantastic staff very informative.
The average.Our room was overlooking the Rhine with a comfortable bed but the pillows as we noticed in the 3 hotels we stayed, while in Germany are very soft and you only get 1 each ! Also you would think at this time of the year (October) the heating would be on, this was not the case in the Allergo, we had to get someone from reception to bleed the radiator, not what I expect from a hotel of this standard.
The bad, Micro bathroom the smallest space we have ever seen in a bathroom the shower millimetres away from the toilet, made the act of showering difficult, Liquid shower gel in a bottle on the floor, no shelf - nook or cranny to put items on while showering, very compact.