Excellent. Thanks for posting that.

I expect I've visited Dendros, but much of your description could apply to any Greek island. I've often moored my boat to one of those lampposts. Two bolts out of four holding it down is par for the course; after a few months the wind will blow the glass lantern at the top off. I often wondered how some businessman cornered the market for these idiotic lamp posts. (Don't tell me - I know!)

But I suspect your mention of climbing and sponges might be a clue to the island's identity.