Take early morning bus or train to eranukalam and enjoy MG road , visit Cochin gurdwara ,subash park and other children park around main boat jetty . check out spices on Broadway lane ,eat local food around bay pride mall.
1.When in Kerala don't forget to try the yummy local dishes : appam's with veg stew, iddiyapam's with chana curry ,puttu ,Malabar parotta ,onion pakoras ,banana pakoras ,chilli Bhajji ,local chocolates and the famous fish curry ,if you like non veg food.( Banana chips and jackfruit chips too )
2.If you are a vegetarian ,no worries . there are many places that offer veg only food .
3. Must try is local veg thali ,it is yummy and flavourful ( try this if you are not fussy about coconut oil preparations )
4.For non vegetarian , this place has a plethora of halal meat options.
5. If you crave for chaat (paani poori / samosa /bhel poori ), head to bay pride mall for the local vendor just outside the mall.
6. If you seem lost ,ask localities. People are very friendly and helpful .
7.Cochin has good coverage of ola and uber cabs . Autos are also pretty cheap and easily available .
8.Trains ,Boats and KSRTC buses are available in abundance to move from one Kerala city to another .(friendly if you are on budget travel)
Kerala has so much to offer : beaches to hill stations to wildlife to adventure . It is THE place for vacations .