While this is a stunningly beautiful spot we were not wiling to jump off in the name of research, so you'll need to do that yourself.
There is a very steep ladder that you need to climb back up to get out of the water — it's the only way out. Word of warning: Medical facilities are virtually non-existent on the island.
Really not for us, or possibly anyone holding on to their sanity, but we can see the appeal for some.
There's a parking charge of 5,000 rupiah.