I live in a rented apartment so I can't legally host on Airbnb - but I'd love to simultaneously room-swap with people in other cities when I travel... (Eg swap my place in London with someone in Berlin for a week or two)
[0] the "family" was very broadly defined - e.g it explicitly included unmarried S/O and their family, and implicitly close friends. but it wouldn't have included "someone I never met and who found me on couchsurfing.org".
May have small setups too..
some group unlock codes: couchsurfing airbnbhosts