Björn is a great host! I guess you can just stay there but I had a really good time also talking to him about basically anything. It was very inspiring to exchange our views on climate change, capitalism, the meaning of life etc.
If you're only into tourist stuff, you still have a super nice flat from which you can get literally anywhere in 10-20 minutes by bike. I enjoyed my vacation at Björn's home a lot and would be happy to return any time again!