Perth: Used it from my hotel (the Parmelia Hilton) to go to a liquor store. The driver was very friendly, explained the route he was going to take, and didn't mind waiting while I ran into the store to get my booze, he then drove back.

Sydney: Used it twice. The first driver, from a restaurant to the IC Sydney, dropped us on the corner in the rain instead of entering the hotel's covered portico, I gave him a 4. The second driver had trouble finding the IC but was great otherwise. Tried to get a ride during rush hour and watched the driver head further and further away from the IC before I cancelled the ride.