Looking for classmates for Spanish

Hi there, 
After trying to find a language school to study Spanish I have found that almost none of the academies offer hours which suit my timetable. 
I have tried with a private teacher but think that working with classmates is much more interesting and communicative. 
I would like to try and find some other people who want to improve their Spanish and we could then contact a private language tutor. 
Of course the schedule of classes we would have to decide and I suppose meet in a bar or something for classes. I live in the Chamartin area and have a B2 level of Spanish.
Anyone interested contact me!
Thanks! 
Gemma