Beatle if you don't mind a little bit more of a drive , I would highly reccommend Cania Gorge near Monto. It would have to be one of the best places for Families and when we get the oportunity that is the place we stay at.
Fishing, Bushwalks, Animals, Pool and Playground.
Acommodation comes in Basics huts to small Villas to a Bunkhouse or a Tent if you desire.
Well worth the extra couple of hours drive.
Regards
Brett