Best German classes in the city? (Frankfurt)

All-

I am moving to Frankfurt in early August and am looking for a recommendations for reasonably priced German classes in Frankfurt. I've taken level A1 at the Goethe Institute in Boston, which I loved, but I'd rather not spend so much money on my next course.

Does anyone have recent experience and advice for this? The only thread I could find was from Protected content I have a feeling some fresh information would be beneficial for all :)

Best,
Diane