Start your trip with the most popular tourist spots in Alappuzha, the Alappuzha Beach. This beach is an ideal place for people who love to relax and sunbathe. You can enjoy the beautiful sunset while taking a stroll on the beach. You can also enjoy some delicious seafood from the nearby restaurants.
On Day 2, head to Thrissur to visit Kerala Kalamandalam. Kerala Kalamandalam is a deemed university of art and culture situated in the Cheruthuruthy village in Thrissur. You can witness the famous Kathakali and Mohiniyattam dance performances here. They also organise various workshops and classes on traditional dance forms of Kerala.
Next, head to Kochin and visit the popular Chinese Fishing Nets in Fort Kochi. These fishing nets are a unique attraction and it's believed that they were introduced by the Chinese explorer, Zheng He. You can witness the mesmerising sunset while enjoying some delicious seafood from the nearby stalls.
On the last day of the trip, visit the Mattancherry Palace which is also known as the Dutch Palace. This palace was constructed by the Portuguese and it still has the influences of both the Portuguese and the Dutch. You can see the beautiful murals depicting scenes from the Ramayana and other mythological stories. You can also buy souvenirs from the nearby shops.
If you have an extra day, you can visit the beautiful Periyar National Park in Thekkady. If you have less time, skip Kerala Kalamandalam and head directly to Kochin to explore the other attractions such as the Pardesi Synagogue and St. Francis Church.