My friend's sister is currently in her last year at Usyd and this is what she told me:
Generally its cheaper the more west you go. Check out terrace houses- some of my friends still live there cause they’re at the local clin school - it’s cheaper than the uni village. I tried to apply but got full too fast. I ended up living at sydney uni village in my first year. It didn’t include food (unlike other official usyd residences) so it was “cheaper” like $303/week and it was really close, close to libraries and new town which is sorta a nice place for food and entertainment. Had only 50Gb internet though so that was **** but phone plans are great here so u can jus get a good plan and hotspot if need be