When my sister arrived in Sydney with 4 children, I was scrambling looking for an affordable accommodation for them. I found this hostel smack bang in Sydney Central, very close to the train station and china town, which meant lots of shops and restaurant and halal places to eat.
The staff was lovely and very very helpful, the cost for a family room for five is probably the cheapest in Sydney at $145 or less if you become a member. The room is big enough and has a big floor to ceiling window and very clean. It is just infront of the bathroom, which is clean and spacious and has enough facilities- wet shower cubicle and dry cubicle which allows privacy, which was much appreciated.
The cost of internet is also very good, around $5 an hour and printing cost 20 cent a page, which goes to charity of their choice- which was Oxfam sponsor a child, which was lovely.
Given that it is right in the middle of a big city, it is reasonably quiet, but our room is infront of the bathroom and every time someone entered the bathroon, the banging of the door is a bit noisy. It is also a hostel, so young people do get very excited and got into really loud voices- but happy excited voices, not fighting voices. So you will need to tolerate that.
They have a big TV room, dining hall and shared kitchen, all well furnished and equipped, again on shared basis, so a degree of tolerance is needed when one goes into hostel living.
I recommend this hostel to anyone who wants to experience Sydney on a budget.