Plus: Great location, room was very clean, had a desk and a small fridge, internet worked (a bit slow), wasn't that noisy, tall rooms, good service, zero problems. Had also water boiler and a tea cup and a glass, free shower gel. Could come and go as I pleased. REWE and Lidl around 15-20 minutes walk away.
Minus:
Old and not perfectly maintained building, some staff didn't speak much English, no bidet shower, and no aircon - during +32C days the room was even hotter and could not keep the window open in the nights due to the noise from outside so most of the days I woke up sweating. At least I was able to sleep. Not the best place to stay during hot summer. Room was quite small. Easy to take a train or two to the airport.
-1 point from lack of aircon, -0.5 points from the lack of bidet shower. Still I'd definitely stay here again, but not during summer when it's hot.