Ashram Yoga Himalayas (New Delhi)

Hi InterNations people!
I would like to stay in an ashram for 2 weeks in May to get away from Delhi's heat. I would like to find an ashram:
- that lies in the nature and is calm
- that provides good yoga classes
- that is based on free donations
- that is not too difficult to reach from Delhi without a car
I am happy about any advice!
Thank you so much for your help and best,
Hannah