Bathing suit (two or one piece)
Toiletries and Medical Supplies: Bring sunblock and mosquito repellent
Photo Equipment: Don't forget your digital camera since the view is stunningly beautiful. My most perfectly shot beach picture was taken in this island.
Luggage and bags:
Try to travel light, because with all the transferring you're going to be doing, you'll have to carry your luggage around a LOT.
Clothing/Shoes/Weather Gear: Just bring your usual beach get-up. This is not a very populated a beach, do not bother dressing up.
Toiletries and Medical Supplies: Bring your own toothpaste, toothbrush, and all your necessary toiletries, as the most you'll probably get is a bar of soap. Shampoo if you're lucky.
Miscellaneous: Bring a room and linen spray for the bathroom. When we were so terribly bothered by the smell of the bathroom in our first resort, we moved to another one and found the same scent (so we suspect it's probably the water). As a last resort we sprinkled a packet of instant coffee in the bathroom, defeating the smell, but leaving the strong aroma of nescafe while we bathed.