My wife and I did stay with Habitat at curacao, inside Coral Estates the week before Labor day in 2007. I'm aware of some negative revues, but the dive operation (Easy Divers) was exceptional. A hurricane came through the area near the end of the week, and that was the only time I saw bugs in the room, probably reacting to the changes in air pressure, or something. Although we only had trop. storm level bad weather in Curacao, and weren't evacuated, the hotel staff kept up the operation of the resort every day, including modifying the breakfast buffet ( semi outdoor) to keep it open, and other touches that were appreciated. They don't usually get hurricanes that far south, so I commend the staff for their efforts.
If you have the bucks, I would suggest that you check out renting a villa or condo in Coral Estates, and diving with Easy Divers. The reef out from the hotel pier is outstanding if you like shore diving and night diving. Good Luck.