English Classes Powai and Surrounding (Mumbai)

Hi there, I am looking for an academy/school/university located in Powai or near surrounding where I can attend English classes to improve my English (duration 6 months). Does anyone could recommend something?
I've found the Stanford English Academy but it's located in Navi and I don't know if it's too far respectively takes to long to commute there from Powai!? Any experiences?

Last but not least I'm interested in taking Hindi classes as well (for greenhorns :-)), any recommendations?

I would be thankful for every single hint/advice!

Thanks very much and have a nice day,
SVENJA