Yep, about 3 years ago, we rented the Beach Cottage or something like that at the second valley at Eurong.
Great house, bug proof and screened BBQ area out the back, nice and tidy, good condition etc and we did a last minute book thing at "I THINK" about $166.00 per night and we had 4 of us there.
Sleeps about 10 I think.
Dingo proof fence, concrete parking for the Jeep, so it didn't get scared being "off road" and it had a back yard outdoor shower and hut set up.
Google will be your best friend. If ya can't find it, let me know, because I'd remember it as soon as I see it.
The only down side, ya might end up with the Edz clan and the Jeepers Clan doing some free loading while ya there.