We got a room in the basement, despite having ordered and paid for a "standard room", and NOT a "Standard basement room". The receptionist told us that the hotel was fully booked, so we couldn't get another room.
The room was dirty. There was dust on basically all surfaces, and when I looked under the carpet by accident - I discovered that it hadn't been cleaned underneath for a LONG TIME.
There was clear signs of moist/mold on the walls below the windows and the curtains were full of stains.
The shower was directly accessible from the room - and without a door - which made it basically impossible to sleep because of the constant noise coming from the fan (which could not be turned off) in the shower.
Overall a very poor stay, considering paying 320 euros for a weekend in February in a dirty basement room....