Anyone brought their child to the Bermuda swim?

Hi there, I am seriously considering the Bermuda 10K this October and am wondering if anyone has gone there with their child. I have a seven-year-old who LOVES the St. Croix swim I've done the last several years. I am having trouble finding accommodations for the Bermuda swim that are under 400+ a night, and am wondering about the quality of Beaches, ease in traveling around with a child when you can't rent a car, etc.etc. It seems a very expensive island, which is okay if you find the right place to stay, but I am having trouble wrapping my head around it all. I would love to do the swim, but was alarmed when I read things about the Grotto Bay not having a great beach, and being across the street from the airport. Any advice from anyone who's done it? (We also looked at 9 Beaches, which sounded great initially, but I'm not keen on being across the harbor from the smell of slaughterhouse.) Any comments welcome. Thanks! Sydne