We stayed in one of the Classic Superior condos at BelMar. Nice, clean modern (in 04) unit. Literally steps from the pool and less than 100' from the divedock. The house reef there is pretty good, we did it twice. As is probably evident from the pictures, there's no beach there if that's of interest. One thing to know, the master bedroom is on the street side of the property so all the views are from the kitchen/living room. The 2nd bedroom is in the center of the unit so doesn't even have a window. Or if it did, it faced onto the hallway as I recall. We had the 2nd unit from the left and could watch sunsets from the couch.
Parking is just off the street and Buddy Dive is located on the premises. If you stay on one of the ground floor units, you'll have a lockable dive locker outside your back door. Upstairs you get a locker by the diveshop - you may need to bring a lock. The 1BR units are all upstairs.
I think I'd see if you can get DiverVince's place first though. It looks much nicer than BelMar.
Vinibu, Bellevue #9, Bonaire, Dutch Caribbean--Welcome
We went to Port Bonaire once, nice condos but it's in the flight path from the airport. At BelMar we never heard anything at night except the occasional donkey. Downside of anything in Belnem is that except for one small restaurant nearby, everything is either back in town or at the Plaza Resort which is a drive around the lagoon.
As others have mentioned, after 4 dives per day, we mostly just slept there. All the really good southern divesites are 5-10mins. down the road, they start just past Belnem. For boat diving we used Toucan at the Plaza, they have several decent sized boats, took mostly smaller groups - I can't recall there ever being more than 10 - one afternoon it was us, a dutch couple and the DM. We went out to Klein and did a nice relaxing dive at Forest.