I stayed for one night and visited the Christmas market before I had to catch a plane early the next morning. Room was small but all was great.
The hotel is right downtown, great location, small rooms but clean and breakfast was great! Available rooms are either with toilet and shower or some have the toilet down the hallway. So you want to make sure you’re reserving the right room.
Hotel only seems to have a very small staircase, I didn’t see an elevator, so if you have a lot of luggage to haul, you might want to stay somewhere else.
Parking ramps are closeby. We picked the Arts Center ramp and the spots were very tight. EUR 2/hr, Max EUR 28 for 24-hr. Thought that was pricey but maybe those are normal prices for Düsseldorf.