Looking for a bed... BRISBANE

Sally, Casey and I will be in QLD on holiday for the week from the 8th August until the 14th. We are heading out to Oakey for the first 2 days to catch up with a mate who does some specialised work for the Army.
After that, we are heading to the Gold coast and staying in the quite dodgey looking "Crown Towers Resort" - hey, you've got to have a budget when you have a family.
We'll be doing all the normal things. Theme parks, exploring, tourist attractions, sitting in the hotel room spending hours lazing around... hopefully.
We fly out of Brisbane at 0700hrs on the 14th.
So, I'm hoping to scrounge up a bed for the 3 of us, for one night in Brisbane, leaving early. Somewhere close to the airport would be preferable.
Can any QLD'ers help out? If not, I'm doomed to stay in some cockroach infested hotel room......
After that, we are heading to the Gold coast and staying in the quite dodgey looking "Crown Towers Resort" - hey, you've got to have a budget when you have a family.

We'll be doing all the normal things. Theme parks, exploring, tourist attractions, sitting in the hotel room spending hours lazing around... hopefully.
We fly out of Brisbane at 0700hrs on the 14th.
So, I'm hoping to scrounge up a bed for the 3 of us, for one night in Brisbane, leaving early. Somewhere close to the airport would be preferable.
Can any QLD'ers help out? If not, I'm doomed to stay in some cockroach infested hotel room......