ok, if you know how to get to the airport you know how to get there.
It's directly opposite toombul shopping center, if you know the gateway motorway, and where the airport turn off is, turn away from the airport, so coming from the gateway, turn left, if coming from north, go around the round about and turn right. Then follow that to the very end and turn right, then it's about 400m's on the left, you can't miss toombul shopping town, so look on the other side of the road. It's quite straight forward.