Hi there,
I'm in the same boat, moving from Adelaide to HK to study at HKU for 6 months as of August 19th, and trying to find accommodation so far has left me with very little faith in humanity!
Everyone keeps saying live in a residence hall, but I'm pretty sure applications are closed already (and thank god for that, because sharing one very small room is not my thing!). Another option is serviced apartments apparently, but everything seems to be fit for a budget of a person who is working and earning ridiculously large amounts of money...I've even tried the private rental market and found more than a few decent places, but they always get snapped up before my boyfriend can get there for an inspection
I'd be keen to get a flatshare if you're interested, just message me via the private message thingy on this site if you want to have a chat about it, or even just pool resources on where to look!
Beck