We left the place after 30 minutes. The toilets were full of pee, the flush didn't work, it felt like no one cleaned the place before we arrived. It was really disrespectfull regarding the covid situation and the life conditions on a boat, where the air does not circulate.
We wrote to the owner to cancel our two nights. We were ok to pay for the first night but we asked for a refund of the second night. He didn't even reply.