Not all landlords are the same. I have a friend who rents a place in Venice and the landlord told them they could airbnb the in-law addition if they had no use

Not all landlords are the same. I have a friend who rents a place in Venice and the landlord told them they could airbnb the in-law addition if they had no use for it. Presumably the person on the lease is on the hook for any damages anyways.