Thanks! Which is the best way to get to St Jean de Luz and San Sebastian? Rental car? Bus? Train? And what are the costs and time frames?

Our original idea was to take a little side-trip to Andorra for a day or two, so we initially favoured the Mediterranean side, since it looks a lot easie to get to Andorra from there. Does anyone have any suggestions for what to do on that side?

All suggestions welcome...