My wife and I visited Croatia in 2017, renting a boat for a week for 4 other friends and it was the trip of a lifetime. One of my favorite beaches was Stiniva on the southern rocky shore of the island of Vis.
Vis is known for its wine, beautiful stretches of countryside and quaint seashore villages - and this beach is known for its insane beauty and jagged cliffs. The main access is by boat - you have to swim to the beach from the outer inlet. I got tons of drone footage of the cove by taking up the drone from the boat. Such a neat experience.
Here is the travel video we made of our sailing adventure: