The Alivio Tourist Park has plenty of parking, plus a very good restaurant with reasonable prices. Plenty for kids to do a great pool, basketball, table tennis, volleyball court. etc. Overall its a great family place to stay on the edge of Canberra.
The Canberra South Motor Park is close to the freeway, so expect a bit on noise from passing traffic. The reports Iv'e seen seem to indicate it is overpriced, and outdated, with a lot of permanent residents. However the amenities are kept clean and as neat as possible.