IIRC it is enforced AirBnB side, so you can't rent too many days through them without providing the documentation needed to gain an exception.
But this doesn't stop you using other services. While non have the same inertia and awareness amongst the public as AirBnB there are several so it is easy to get around the limit by using several providers who don't talk to each other.
But this doesn't stop you using other services. While non have the same inertia and awareness amongst the public as AirBnB there are several so it is easy to get around the limit by using several providers who don't talk to each other.