Sven is perfect host. Always reply to every message/questions. He is very communicative so don’t worry if you didn’t understand something or need to know more. He’ll do anything so you can be comfortable.
The apartment is:
-spacious even for 4 guests
-good location (close to the shops or old town centre)
-clean
Sadly possibly previous guests were smoking cigarettes in the apartment despite the no smoking policy but after a while the smell was gone.