I loved getting a different view of the city and the island Lokrum from the water. This kayak tour is a really cool activity if you want to be a bit more active. You also explore a cave that can only be reached by boat (even though I personally found it a bit underwhelming). Full disclosure: It was a bit crowded in the cave since there were more groups than just hours and paddling against the waves WAS hard from time to time. Still a really cool experience, I would recommend!