The Seaside Promenade is a beautiful walk along the sea. It is very similar to Marine Drive in Mumbai but without the traffic (since it becomes a traffic free zone in the morning before 7.30 am and in the evening after 6 pm).
There are several vendors intermittently placed, selling chat and small wares. The other side of the road also has several eateries, as well as hotels in case dining is being considered.
Definitely worth spending an evening strolling along the seaside or just sitting along the rocks, looking at the sea!