I have mixed feelings about the Japanese Airbnb news. On the one hand: does it seem like the optimal regulation? Probably not. On the other hand: my condo’s live-in supervisor had to update their “We will call police if we spot illegal tenants” policy with “Note: Patrick isn’t”
Note that being fluent in Japanese and culturally acclimated to norms of living in a Japanese building are not sufficient to guarantee that all neighbors will be enthusiastic about you breathing the same air.