Here is a list of things you could do, in no particular order, depending on your interests and budget.
  1. Fort Kochi BeachVisit the historical sites in Mattancherry/Fort Kochi - Jew Town, Jewish synagogue, St. Francis church, Santa Cruz Basilica, Vasco House, Dutch Palace, Fort Kochi beach, Chinese fishing nets and watch the sunset.
  2. Swim at Cherai beach and take in the fishing villages, paddy fields and coconut groves and sip the juice of a tender coconut.
  3. Visit museums and art galleries - Museum of Kerala History, Gallery of Contemporary Art, Hill Palace museum and Chaithram Art Gallery
  4. Shop for curios, handicraft and clothes along MG Road, Broadway or Jew Town (Mattancherry).
  5. View a Kathakali performance.
  6. Take a course of relaxing Ayurvedic massage at one of the leading Ayurvedic hospitals or your hotel, if such a service is available
  7. Take a brief boat-ride along the scenic backwaters of Cochin. For extended period, hire a kettuvallom (houseboat) and spend a few nights on board slowly travelling up the tranquil backwaters and having freshly cooked meals prepared with freshly caught fish.
  8. Visit some of the temples, churches, or mosques that form an indelible part of many Kochiites life.
  9. Spend a few days in the hill resorts at Thekkady, Munnar or stay in a tree house, up north in Wayanad district.
  10. Wildlife/bird spotting at Mangalavanam, Kodanad, Kumarakom, Thattekad or Thekkady.
  11. Children and adults alike might like a visit to South India's largest amusement park - Veega Land.

Village boatman
A village boatman, Muvattupuzha river
Fishing boat near Vypeen
Fishing boat near Vypeen