Recently I’ve been living next to an illegal and poorly run STR operation and I can now better empathize with folks who strongly oppose them.

The property would be in Florida as that is where I live. 

I am interested in buying a long-term turnkey property in a nice area (I live in San Diego so this property would have to be out of state).

Ive owned a 3 family in Fitchburg MA for 4 years that has done exceptionally well with it, living for free in one unit for a while and constantly upgrading the property over the years.

Literally to save their lives.

Quote from @Braeden Warg: Thank you for the clarification and information.I live in Cabarrus County and have experience in residential and commercial construction.

I live about 20-25 minutes away in Bloomfield Township (Lake Geneva mailing address) and have a rental in Delavan. 

Homes are affordable and we're seeing homebuyers enter the market with a lot of assistance available from the city.I’ve been investing in Detroit since 2019 while living in California and own 12 doors.

If they do, you may have a chance under the scenario you're proposing - if they share your concern for it's condition (although that seems unlikely since they've been living with it the way it is for some time, it seems).If you own it, it's pretty lowbrow to expect a neighbor to invest in your property. 

He's lived in Japan a few years as well (Fukuoka, I believe).