Well, that silence was deafening. I guess it is Aussie summer holiday season.
Anyhow, I should put in a word for the gym I found: place I've found: http://www.maash.com.au/
It feels rather like a squash club with a gym attached ... but that's not so bad. The gym isn't super well-equipped but is pretty adequate: there's only one olympic barbell, but loads of others; there are loads of benches; and all the "nice to have" stuff - standing and seated calf machine, hack squat, cable cross-over, cable pull-down, chin/dip station. There's a basic squat rack (and a Sm*th machine, if that's your thing). The dumbells are a bit limited, with the heaviest being about 35kgs. There's also a room downstairs full of cardio equipment, and loads of universal machines, but I kept clear of that. The downstairs stuff is pretty new; the upstairs "proper" weights and equipment show plenty of wear and tear.
There's no air-con; plenty of fans. Very relaxed place (you know a place is going to be good when you don't get a list of rules thrust in your face when you arrive). It's certainly unlike a big chain gym.
The one-month price is a bit steep at A$120, but I'm sure that comes down if you sign up for longer. I think they're offering a year for A$499, which compared to UK prices would be pretty reasonable: I've no idea how it rates around here.
I'm only in Australia for a month; this place is going to suit me really well. If I was here longer would I make it my regular place? Probably.