I am presuming you want to fly from Jandakot?
The flying schools/organisations that will rent you an aircraft (and this probably isn't an exhaustive list but some of the "main" players if you like) are:
Heliwest (have a Bonanza)
Advanced Cockpit Flight Training (ACFT)
Jandakot Flight Centre (JFC)
Minovation
Air Australia
Royal Aero Club of WA
I tried to go from the Northern Apron to the Southern Apron so its not in any order other than that.
If you search any of these you will see pages on each I am sure. Best bet is to visit them and see which suits your style and flying plans.