Florida doesn't say "Desert Isle" to me, but perhaps the locals came here to get away from all that water.
The back of the card says "33 New Units - Air Conditioned - Free TV in rooms" then breaks into Postcard Tourettes, shouting ""STEAM HEAT, YOU CONTROL IT FOR YOUR ROOM." Then it recovers its composure. "The best route to central and all of south Florida; misses the congestion of the East Coast."
Your hosts: Mr. & Mrs Orville Bumgarner. And there they are! Or maybe not; that could be an armless Big Boy statue with his head tinted an Arthur-Godfrey hue to evade detection.