How about yoga? Or how about a peaceful place with a cliff and downside the most perfect and beautiful beach. Or what about the cafes to sit and Arabian sea to stare?
Just go to varkala. Its a place to go, place not hyped like goa or Pondicherry. You will get so called peace and the beach pleasure over here.
I have been 7 times over here and everytime i go i try doing something new in this place.
If you have 3 days in hand just go out to this place. Take a flight to trivendrum and head for a hour journey to this place. Trust me you won’t regret ever going to this place. I could correlate this place to indonesian beaches.