In my area, Zillow is horribly inaccurate.

That being said I never graduated college and think high school and college are absolutely horrible at what they are suppose to do.  

COVID-19 - Rental Housing Association of Washington (rhawa.org)This is a horrible time to be a landlord.

  I can feel your frustration, I can see the hard position it puts you in but if Florida's building materials prices are anything like here in Oregon, a 15% isn't as horrible as I'd expect. 

Garbage disposals could be a catch 22 because then tenants might over use them and cause plumbing problems but it’s not a horrible thing to have either.  

You provide poor instructions or horrible training, and it will inevitably lengthen the turnaround time for work, increasing your cost and probably your blood pressure.

Prior to this law there was a horrible lawsuit about an apartment maintenance worker raping tenants. 

The reason cap rates would be in the 10% range is because the market is horrible and no one wants to buy there. 

Having tenants take care over unit's own garbage are good in theory but a horrible nightmare in practice.

In addition to that look at some of the most affluent cities in the US and their crime rates are horrible (Washington D.C. and Chicago come to mind).