Although I live in Northeast OH, I have friends & family in Florida. And, before I became a Realtor, I traveled all over Florida for business. There are a number of areas that meet your description. And, depending on the exact location, there is a wide variety of price ranges for real estate and cost of living.
My best suggestion is to buy the most recent edition of Places Rated Almanac (you can find it at Borders, Barnes & Noble, Amazon.com, etc.). That will give you a good idea of the amenities, cost of living, weather, real estate values, etc. Then contact some Realtors in your favorite areas of Florida for more specific info.
I am affiliated with Keller Williams (the 4th largest real estate company in North America). There are Keller Williams Realtors all over Florida. You can contact them directly or contact me and I will refer you - - your choice.