Bad experience. Booked the room long term. The actual environment was fine, only quibble was the towels which were too small to cover your modesty on the way to your bedroom (if female). The shower-bath has no curtain and the stream is very powerful so it's difficult to shower without spraying water everywhere. He puts a towel out to mop up afterwards but probably don't go there of you want to shower every day. Actually don't stay there at all .
The main issue was the host's rude behaviour. By his own admission he does not adhere to "normal conventions of politeness". If you have any (small) issues, which you inevitably will if you stay longer than a few days, you will probably be spoken to rudely. For example, it seemed I hadn't been closing the kitchen tap tightly enough, causing it drip. Instead of mentioning it politely, he ranted at me as if I was totally stupid explaining about 5 times how to close a tap.(I suspect this might come from a sexist attitude as I doubt he would have taken that tone if I had been male). I of course asked him to speak more politely, which is when he said that he doesn't feel the need to observe politeness conventions.
The other source of friction was the washing machine. It states/stated in the listing that a washing machine was available. But this is/was contradicted in the house rules- beware. So I innocently used the washing machine, causing him to get pd off.
After this I didn't want to stay there any more. I felt very unwelcome. I complained to Airbnb but they were quite useless. In the end Bernhard and I reached a cash settlement and I left. From the total of the settlement he deducted money for the time I used the washing machine and for a ticket to see his choir perform (50 euros) which he had offered at the beginning of my stay and I had accepted to be polite. I highly doubt he paid anything for it of course. So don't accept anything from him or he might decide you owe him later if things deteriorate.
Glad I got out of there!