We overnighted there last year and Freddie set up a night to see a flamenco show on Las Ramblas; We did the Park Guell and a tour of all the Gaudi monuments. Don't miss the Boqueria as your stroll Las Ramblas - there was a paella restaurant there that was really great; Also the Mercado (the main market) in Valencia. We did the Regent excursion since we were there for such a short time. Most people want to go to the LLadro Factory. The excursion of the town and market were really nice.