Am from thrissur but I would say rocking is kochi. Best city for local sight seeing in kerala. We can see lot more places on there. Like fort kochi, hill palace, lulu mall & lot more. Adventure parts like off road racing, kayakking, and more. Hotels & Accomadation are very good. And we get cheap rate too. Security of the place is good enough. So we can surely call its the rocking city in kerala.