From Kochi-Munnar,Aalapuzha,Athirapally-
All are doable in one day each for a place.Customize well according to ur taste.
From Calicut-Wayanad.
Kumarkkam,Thekkady,Nelliampathy,Vagamon are other places.
Welcome to Gods own country. 3days !! not enough but with proper planning you can visit Munnar and Aleppy or else Thekkady and Vagamon or else Munnar and Thekkady.
This is how you can spend three days in Kerala:
Day 1- Kochi, Day 2- Alleppey, Day 3- Varkala or Day 1- Bekal, 2. Day 2- Kannur, Day 3- Palakkad or Day 1- Munnar, Day 2- Vagamon, Day 3- Kochi
Just come and explore kerala in 3 to 4 days bro...munnar hills,alappey house boating,kanyakuamri sunset view,wayanad forest and hills,kochi,marine drive,fort kochi beach etc