Hey Rajat,
I'm from Kerala and here are some of the main attractions in Kerala in the order from North to South Bekal Fort Wayanad(currently flood relief activities are in progress here)
Fort Cochin - Beaches, food, Culture
Munnar - Hillstation(now it's neelakurinji season happens once in 12 years)
Alleppey - backwaters
Varkala - beach and cliff
Kovalam -beach there are also many other spots to explore in Kerala and you can also find budget hotel near to all above mentioned places.
Happy travel!
Hi Rajat, We went to Kerala for 5 days covering Munnar (2 N), Thekeddey (1 N), Alleypey(1 N) and Cochin (1 N). I wish I would have stayed another night in Alleypey to fully enjoy the beach and backwaters. I mostly stayed in homestay and I bet you can find some good ones now. I tried to book a boathouse in Alleypey but they were charging 25000 for a night for 4 people, which was a little over to my budget. So, instead I stayed in a airbnb property.