it sounds like you are not aware that AirBnb is not in the Room Rental
business. They place all duties of compliance and legal behavior on
the landlord. Like Uber and Lyft, they are in the business of
"matching buyers and sellers." You cannot rely on existence of a
Listing to mean anything about its legality.
I agree that this is the way it should be. AirBnb is nothing more than a 21st century version of the NY Times Classified adds and the NY Times was never held liable. BUT, jurisdictions have made successful legal claims against AirBnb to hold them accountable and AirBnb has paid millions in settlements. So, AirBnb can be held liable.
The simplest way to know if the market is regulated is to look for a registration number in the listings. If 10 have a number and 2 don’t, I would be suspicious of the two that don’t. If no one has a number, then I would “suspect” that the particular market is not regulated.
I have mixed feelings about Airbnb because of how they affect
neighborhoods where people are trying to live normal everyday lives.
That’s true in 100% of the markets? No, it’s not. It’s true in Iceland? No idea. I know of some markets where the good from the short-term rentals has exceeded any bad, at least in the eyes of the locals. I am absolutely certain that the opposite is true in other markets. The way to determine which is which is to just follow the law knowing that the people of democracies do what is best for their situation.