On the other hand, Barcelona has suffered from tourism for a long time. Barceloneta (neighborhood right next to the beach) is a famous example of this where families who lived there for a very long time been driven out of their neighborhood, solely because of AirBnb and their like. Hotels were already regulated but when AirBnb appeared, regular folks started kicking people by raising the rents, then converting it to short-term rentals.

So, while AirBnb is both good and bad, I prefer to value native peoples ability to live in their places, rather than helping the rental market, that was just already stretched when AirBnb arrived.