Hi Shraddha - Here you go..!! Day 1 - Arrive Cochin & visit Fort Area, Mattancherry, Click pictures of Chinese fishing net. Walking or Cycle will be a good option to these narrow beautiful road with have Portuguese palaces, homes. (Famous hotels & have Restaurants for eating joints are - Brunton Boatyard, 8th Bastion) on the Wembenad lake. Day 2 - Breakfast & leave for Kumarakom/Alleppy to enjoy backwater for 01 night on Hose boat. Day 3 & 4 - Drive to Thekkady or Munnar (In Thekkady you can visit Periyar Tiger Reserve, DO Boat Ride on Periyar Lake & Spend good 02 nights in lush green environment) / Munnar is having beautiful Tea/coffee landscape and South's Mountain so it has another good ecperience. Day 5 & 6 - Start early and just think of doing nothing and just chilling in Kovalam/Marari Beach. You can explore thier beaches, day excursion to Kanyakumari and visit teh great Temple in Trivandrum - Padnambhaswami Temple (Was on news for Gold & other articles treasure). Hope this is helpful. You can connect with me on Insta - @awesome_on_the_roadjourney