We live in Old Seminole Heights, which is about 15 minutes from downtown Tampa. http://www.oldseminoleheights.com/ It is a national historic district, filled with bungalows and historic neighborhood charm. There are several small businesses that our neighborhood strives to support. There is a great sense of neighborhood here, everyone takes pride in living in Seminole Heights, there are porch parties, neighborhood events, and a lot of neighborhood involvement.
Pros: Close to everything (look on a map and you'll see), great neighbors, every house has character & charm, local businesses, close to new Heights Development on the River. Up & coming neighborhood, lots of potential.
Cons: Pockets of good areas and bad within Seminole Heights, bad reputation, smaller homes (since they are 1920-30's homes, don't expect a master suite with a walk in closet ;) )
In South Tampa the Hyde Park area is beautiful, but pricey, there are also bungalows and old homes with lots of charm. There are tons of restaurants and local businesses there as well. It has a great reputation. I would definitely check that out as well.
Another piece of information..just south of Seminole Heights is Tampa Heights (kind of sketchy) and Riverside Heights (pockets of good and bad). There is a new large development just South of Riverside Heights, and just North of downtown planned called The Heights of Tampa: http://www.theheightstampa.com/ which will be located right along the Hillsborough River and include restaurants, shopping, and housing.
Here's a link to the New Heights Magazine which consists of information from the Urban Corridor of Tampa: http://www.newheightsmag.com/
Urban Corridor: Seminole Heights, Downtown, Ybor, West Tampa, Tampa Heights, Riverside Heights, Davis Islands, Hyde Park & Surrounding Areas
Oh! Also check out St. Pete. It's pretty close to Tampa, and it's such a cute little city. Close to beaches, they also have several historic districs with an urban feel. Downtown St. Pete just has a completely different feel than downtown Tampa, so you should check it out too.
Ok this is getting rather lengthy...Good Luck in your search!