Tip #4 - anchor just west of the little Cay in Bahia De La Chivas. Don't go onto the Cay - unexploded ordinance. it's well marked. Big signs.
The place is really secluded and there is not much light pollution there.
The beach is really nice, and has some shelters.
The bay is partially bio-luminescent and on a dark night the action of your hull in the water from small waves will kick up flashes of light.