Pinellas County area, you have many choices from St. Petersburg Beach on the south end and working north to Treasure Island, Madeira Beach, Redington Beach, Indian Rocks Beach to Clearwater Beach. The further north you go, the higher the prices. These are some of the most beautiful beaches in the USA, anywhere on the Gulf coast has nicer beaches and beautiful aqua-blue water, especially when compared to the Atlantic.
On St. Petersburg Beach you can find condos under $200K and in these beach areas in general most condos are going in the $200K to $400K range. They are only about a 2 hour drive from TV or even less depending on Tampa traffic.
The Marco Island the above poster mentioned might be a little self-servicing. It's a good 4 hour drive and the area prices are mostly in the $1 million dollar range. You didn't list a price range, but for a quick survey just go to Zillow.com, choose map and pick an area and list your requirements and look for yourself. You can write in St. Petersburg Beach and once the map comes up, you can get other areas information just by clicking on the map in those areas. I might be alittle bias since I grew up in St. Petersburg.
Clearwater Beach
Daytona Beach