I lived in Ernakulam (Kochi, Kerala) for about 6 years. I was a student. It's always nostalgic for me to go back to that city on whose roads I cycled kilometres and kilometres - especially from college to the Public Library and back to college during off or boring periods.
The city has changed much from those days (1980s). The marine drive looks totally different. The backwaters smell putrid. They smell of business, in fact. Here is a ship/boat that runs the business.