[Wavytone]

Yes I've stayed there, it is very nice, it is in Centennial Glen below Mt Blackheath. You can observe right outside as its quite dark there - however there may be a lot of tiny bugs attracted by any lights at night - they will crawl in the slightest crack. Assuming you arrive in daylight, be careful to make sure all the fly screens are ok and keep doors shut or you'll have a problem inside - and take flyspray.

If that bothers you go up the top to Mt Blackheath, you can set up at the end of the road, or on the paraglider launch (AstroTurf).

A cheaper alternative nearby is The Potters Cottage, this is quite rustic but sweet, with 2 bedrooms (if you have kids).

For such a large group you can try Kanimbla View Clifftop Retreat, they have a series of cabins located in a bush block on the top of the cliffs, quite nice.

Lots of things to do around Blackheath, have fun !