Hi, sorry for the delay :-)
I participated in Polish course in Glossa School in Cracow. Here's their web page if you want: glossa
I had a great time during my stay in Cracow, not only because the lessons were interesting, but also because the social plan was very entertaining. A lot of workshops, pub evenings and trips.
If you want to know more about this school, you can send me a personal message, I'll answer all your doubts and questions :-)