Sorry about that. I have found out abut the other international school that teaches Spanish for foreigners and they have different courses (a week, two weeks, etc).
the website is
www.sprachcaffe.com and I have asked for an email for you to contact them and get more information as I believe the web site does not offer much.
asistencia@sprachcaffe.com
Good luck with your Spanish and please, let me know how it goes...