I had a lovely stay at Wiltrud's room. The apartment is quiet and clean. Wiltrud is really quick to respond whenever there is a problem and all roommates are helpful and quiet.
Nevertheless, you have to be sure of your schedule otherwise Wiltrud won't accept your reservation. And after my first attempt to make a reservation, the price of the room had increased by more than 50€...
Anyway, I have had a good experience with Wiltrud in this room.