Um, there is one deluxe room that I know of in Cromwell and that's in an area kinda away from the other rooms. It's in one of the blocks that has 3 levels, up the top near the common room for that block. It's a pretty big room and the girl that was in it last semester was from the US so they must give those rooms to the international students.
There's also a group of about 5 or 6 rooms that have their own ensuite and airconditioning aswell that are all next to eachother with balconies, that's not in a normal block. It's called "cottage" and is next to "house" (a house that Cromwell owns and students live there also). It's quieter there, but there is always people drinking on the balconies and stuff and the rooms there are pretty good too, alot better than the standard rooms and Brisbane without airconditioning in the non winter months is damn hot if you can't stand the heat like me.
Hope that helped...
(even though the deluxe rooms are away from the others, everyone gets to know eachother and stuff, i've known seppo's that have been in these rooms both semesters and i'm not even from Cromwell)