When I checked in, the 2 towels on the bed were wet, one of them contained 2 pieces of hair, and the other towel was wet and torn like it had been used for years. I was in such a rush that I needed to catch up with my partner at the Hauptbahnhof and I couldn't ask to change the room, therefore I took a quick shower and ran out of the hotel.
5 hours later, I came back with my partner and this time I had more time to analyse the room. A lot of blood was on the door, in the bathroom, and near the mirror next to the sink. I immediately ran down to the receptionist and reported that, and politely requested to change the room. This young man came, checked, and said we couldn't change the room because "No one is going to clean it", he smelled full of weed.
The floor was as messy as they didn't even clean it before my check-in. I attached the photos of the blood and the conditions below.
Since the condition was so bad, I had to book another hotel room for that night and checked out of this hotel immediately. This hotel and its services should be removed from hotels.com