Why Florida with its swampy landscape and bureaucratic visa issues? My vote is for
Air-Hart Aviation on Lake Okanagan, in the absolutely stunning landscape of the British Columbian Rockies.
What I liked about this place was the ease of getting the Canadian endorsement of my UK PPL (10min over the counter job like it used to be in the US), but mainly that after you'd done your 5hr rating you could rent the aircraft solo. Most places won't let you rent float aircraft on your own for insurance reasons.... Picnincing in the mountain wilderness with just the a/c and the mrs was superb...