Rent a flat or a house in Florida

Please check out city-data.com.

Not just Florida, the website provides detailed information of almost all U.S. communities from the ethnic origins of people who live there (so it's good to look up for your fellow countrymen and women);
how much average annual salary is;
cost of living;
housing cost;
crime rates;
pollution levels (useful for those with breathing or medical conditions);
elevations (nice to know before hand if living at 6,000 ft above the sea level will be the "real" problem);
economic growth figures;
to residential heating fuels;
and so on.

Discussion boards are excellent for readers to gauge chosen areas. city-data.com is expanding to include Canada, as of this writing.

Then, please try realtor.com.

It's a sizable database of real estate properties sponsored by the real estate association here in the U.S. You can look at pictures, prices, neighborhood and contact real estate agents.

These two sites should keep you busy for a while.