Spanish classes (Mexico City)

Hello everyone!
I am planning to move to Mexico DF sometime mid/end of September and would like to take couple of months of Spanish classes Protected content per day weekdays) in the beginning. My level is intermediate and I would like to take group classes so can interact with other students too.
I really appreciate if you could recommend any good schools somewhere inner city of DF.

Regards,
Yergali Yertuganov