Any small hotels or guesthouses recommended for hanging out in Brisbane for a few days?
You might try http://www.shortstaynetwork.com.au/
The requirements may be too long for your anticipated stay, but there are several other similar websites. If you are looking at booking accomodations, I recommend finding something that allows you to take advantage of the "water bus system" up and down the river. That will allow you to get all along the downtown area, Kangaroo Point, etc. without a car.