The 221 acre property, including a lavishly renovated four-bedroom home is where she sought refuge after breast cancer surgery in 2005.
The four-bedroom property on French Island, a two-hour boat trip from her Melbourne hometown, is expected to go for $2 million Australian ($1.8 million US dollars). She has has spent close to $1 million on the retreat, including planting 1,000 trees.
French Island has no piped water, electricity or gas. It is served by a ferry that runs services to the mainland.