If you don't feel like going home when everyone else has, head for Berlin.
It's open till 7am, always has a lively atmosphere and you're sure to meet some interesting characters.
Beware, though - it's a bit of a cattle market
Sit under the palms of this outdoor riverside bar, listen to the cool tunes and pretend you're at the beach - it's nearly a beach bar.
Excellent cocktails for around 5 euros - try the caipirinha cocktail!
I must say that we loved this place and would definitely recommend it.
Casa la Anselma, typical sevillan bar, with flamenco and sevillanas , crowded because it very famous, but we enjoyed our stay there, very funny people.