Here's a recent recommendation from a friend. Balcony on Sixth is a motel in the South Australian town of Murray Bridge. I'm yet to try it out, but it looks great on the web so I plan to visit when I'm on my way down to Kangaroo Island later in the year.
Jeremy, the owner, is a pilot and offers free transfers from the airport for anyone flying in. You can give him a call on 08 8531 1411 or check it out at: www.balconyonsixth.com.au