Hi,
If this is only about building up flight hours, i can recommend you a school called "dean international" located in miami (at tamiami airport exactly).
They have a big fleet of 60 C172/152 or so, a lot of instructors.
I have recently done my time building with them and i think this is a good school for time builders, as you can rent a plane pretty fast.
As far as i can remember of Naples, this seems to be a pretty expensive place.
Another place i 'd suggest you is Fort myers (on the west florida coast). There is a big airport called "page field" and it is definitely more quiet than miami (as a traffic point of view, miami is very busy).
But, be aware that you won't find a school as big as dean international, wherever you go, since it is the biggest school (in term of fleet) of florida.