It was (think it's permanently abandoned now). Desert Inn in Daytona (also RIP) even worse--I'd swear the walls just had a layer of slime on them.
Not in Florida. No snark intended, plenty of indoor pools north of DC seem to work fine, so I can only blame Florida's climate.
The casino artwork kind of looked like the casino in Last Jedi--so this is your chance to emulate the characters who enslave children and space horses.