For a 7-day trip, try out this itinerary:
Day 1 - Arrive in Kochi: Head to the nearby town of Jew and see the famous fishing nets at the fish market.
Day 2 - Explore Kochi: Visit Mattancherry Palace, Kerala Folklore Museum, and catch a Kathakali performance.
Day 3 - Go to Munnar: Check out the Kannan Devan Tea Museum.
Day 4 - Another day in Munnar: Visit tea gardens, Eravikulam National Park, and see the sunset at Mattupetty Dam.
Day 5 - Thekkady or Periyar: Explore spice gardens and Periyar Lake.
Day 6 - Alleppey: Cruise the backwaters in a houseboat, and visit local temples and the beach.
Day 7 - Departure: Gather your memories and head back home.