Spanish Courses in Spain?

Hi,
Im planning to do an erasmus exchange in Spain next year, but I need to really work on my Spanish before. I've been told that the best way would be to do an intensive course??  I was thinking of going to Valencia, as it is on the beach!
I've looked a little bit into schools there and found one that seems good, Taronja School.
But I was wondering if anyone has been there before or if you have any other recommendations?
(moderated)

Gracias
Max