Sprecks beach estate is pricey, but well worth it IMHO. With the AUD at its current level, it makes it less painful.
This is the place that JP/Neil Pryde use for their photo shoot/interviews etc every year. We rented there last year and it was magical. You have a view out over the sprecks windsurfing break so the family can see everything from the balcony/lounge/kitchen sink etc so still feel involved. There are big green lawns for your kids to play on, there is a private entry to the Sprecks launch site and you just leave your gear rigged and ready to go.
We didn't rent through Vela, but this gives a good idea on location etc.
velaresorts.com/index.php We had the Hale Nulu (upstairs and downstairs studio between 6 of us). It is the closest to the water and a great location.