This is a zero-frills place located in an old building. There was construction going on at the time of our stay and you could hear it very loudly and clearly. Note that they do not provide shampoo/body wash and only have a day or two worth of toilet paper (you need to buy the rest for longer stays).
Ralf was very responsive and generous as a host (he refunded us 3 euros to buy toilet paper and let us store our luggage on the day of check-out). However, the place itself was a bit lacking.
Couches in the common area were pretty dirty/stained and smelled which was a bit gross. They have washer/dryer but the dryer doesn't seem to work properly as far as I can tell. You can line dry, however. Again, it's a zero-frills place so expect to provide your own laundry detergent if you need to wash clothes.
Finally, the "fruit stand" next door is owned by a fraud. Do NOT shop there. You'll get scammed and lied to. There's plenty of other stores nearby that'll have whatever you need.