I've spent weeks of my life at the Grand Hyatt in Tampa. There is a nice boardwalk on the property for walking, but it does't go to a beach. You'll need a car to get to the beach or any other attraction. I prefer the pool by the Casitas because its usually less crowded and has a nice view of the water.
If they offer you a Casita, think twice before taking it. The Casitas are nice and have very nice landscaping, but can get noisy when the planes fly over. The main hotel building is completely sound proof.
The Regency club is great with decent snacks and a nice view.
[This message has been edited by frobozz (edited Dec 05, 2003).]