I thought downtown was dead on weekends. But one step inside Spain last Saturday and I found out where everyone was hiding. I'm not sure if the draw was the food (great tapas, esp. the octopus) or the drinks (excellent mojitos) or the unique Euro look to the place. But I do know you don't get too many chances in Tampa for free entertainment like I experienced. There was a three-piece band ala Willie & Lobo -- they are there every weekend. The flamenco dancer is only once a month.
Do not miss it. It's the greatest.