The only thing I expected of this hotel is to sleep 9 hours for 50€.
In fact, the heater was broken and started to make loud noises in the middle of the night like a construction work in the room.
By changing the heating to a certain value, the noise stopped.
At 6 am it started again and could not be cancelled, not with position 0 or 5.
The receptionist mentioned that he will talk to his boss at 7 am.
When I left at 9 am, another receptionist told me that I could have switched the room
(yes, sure, in the middle/end of the night).
No compensation.
If you want to risk not sleeping a night, go there. Because there is no service and no compensation.