So you may want to tailor your ad on Airbnb to prepare visitors for the area.  

. $20 for first time visitors unless you purchase membership. 

I still see many agents using paper and pen to ask visitors to signup on Open Houses.

There are many frugal Airbnb visitors saving half of that money by staying in Homestead and driving 100 miles down in their convertible rental car.

I suggest that you issue the man a notice to quit for serious nuisance, and list the two episodes - threatening a neighbor/visitor with a club (after all, that's what a piano leg is) in the parking lot, and screaming, cursing, and slamming doors at 1:40 AM in his unit, thus disturbing everyone else's peaceful enjoyment, and necessitating that the police come for a second time to deal with his behavior. 

Perhaps she's moved back there or goes there to visit or check mail.

I don't have a copy of your lease so I have absolutely no idea what it says about visitor length of stay, conversion from visitor to tenant etc. but now you've learned a lesson. 

Verified owners would have "VERIFIED" next to their name so visitors would know it's a legitimate profile.

They got all the flipping info, photos they want tell them you will not tolerate any visitors period.

I can imagine what will happen when their friends visit or damages are assessed.