Sue,
we spent 6 weeks touring Oz earlier this year, 3 weeks on a Travelsphere tour and 3 weeks independently. Just from looking at the website I would say this is a cut above the rest regarding accomodation. Its a pity they fly from Adelaide to Melbourne because this is one of the most spectacular drives in the world. However this is such a big country you cant see it all in one trip and if you try it would just be a blur. We would never travel non stop again as we did on our return, it was an ordeal.