> I feel like the whole "rat on your neighbors for money" thing has a lot of negative unintended consequences.
1) If they are running an AirBnB, they're not your neighbor. They just own (or rent) property close to you.
2) There are a lot of negative unintended consequences to you because the unit was rented out. Why should you be expected to bear those costs and silently suffer when you can end it?