+1. Had a few friends ask specifics about this as well but that was a while ago. There have been a couple TA reviews on it and they've been positive. I only have a little information which I can pass on:
* available on Mondays, Tuesdays, Thursdays and Saturdays.
* the couple is indeed alone on the island (the resort has a lease agreement with the government).
* the crew sit offshore and will come to assist if necessary. You call them with a two-way radio.
* there is a WC on the island as well so not necessary to go back onto the boat to use the bathroom.
* price is $800 incl taxes.