ginjig-
Peter's reccomendation of the Paradise Villas is a good one. They are close to town and within walking distance to a variety of shops and eateries. My wife and I have stayed there twice with our young daughter (now 8 yrs old) in the last 2 years. The accomodations are simple but functional. I'd look at the 2 bedroom condos. They also have a really nice pool. They can be booked through Nellie's property manangement, the service that I've used, or through Tradewinds. I think you can even book some directly with the owners but I'd stick with the first two as if their are any problems, they can be taken care of in a timely manner. As an example, our luggage didn't make it out of Seattle on Continental Airlines. It arrived at the San Pedro airport 21/2 days later. Nellies group kept track of it for us, checked with the Belize City officials, picked it up at the airport, and delivered it to our rooms.
View the link that Peter provided. If you are interested in lodging that is a bit more upscale, I'd look to either the Xanadu Resort or Banyan Bay. Both would probably make a golf cart necessary for getting into "town" but also have nice pools. Being as its summer, the slow time, I'm sure Peter's shop would provide your grandsons with some great diving. Their boats are fairly small and during that time of year wouldn't be too overcrowded. We have used Peter and his shop for the last 4 years and have never been dissapointed. Have fun and enjoy the trip, Ken :42: