I do not find the B&Bs I stay at to be cheaper.  In any case, there is a simple solution to that problem.  Raise the GET tax on those accommodations.

I'm not saying your point isn't well taken.  Only that, IMHO, prohibiting such rentals is never going to work, whereas taxing them at higher rates will bring in the capital needed to maintain the infrastructure while at the same time providing the funds needed to enforce regulations on management of those places.

We both have the same goal, which is a higher quality tourist.  They get what they pay for.  Raise the taxes.