Okay... You're all going to say I'm crazy... BUT... is this possible?
In those four days, will it be possible to:
-Mon. Fly in to Seville and immediately jump onto a train to Jerez. Check into hotel for two nights.
-Tue. (keeping Jerez as hub) take train to Cadiz and check it out during the day, then return to Jerez by night.
-Wed. Return to Seville and check into a place there for two nights, explore Seville
-Thu. Train to Cordoba (while still checked in at Seville) to explore and return by night.
Is this too crazy? I might do three days in Barcelona and five in Andalusia, but if I do that, I want to try to get to Gibraltar also (or possibly instead of Cordoba), or is that too ridiculous?
My eyes might be bigger than my stomach on this one.