How difficult is it to find apartments to rent in Canberra?

I'm a New Zealander but I've been offered a job in Canberra, Australia and was wondering how hard/easy it is to find and rent an apartment there?

Also, what are the living costs in Canberra (or Australia in general) compared with Auckland? What kind of salary would be required to have a decent standard of living and some savings (salary is approx 48K per annum).