Haven't been to Saffire, but I have been to the Freycinet Peninsula, and I found it... underwhelming. I mean, the peninsula is nice enough, but not particularly different from approx 10,000 km of other coastline in Australia, and I get better and cheaper seafood at the Sydney Fish Market. Also, being Tasmania, no matter how pretty the beach, the water's too cold to swim unless you're a penguin.

Also, I'd think twice about spending $1800+/night on a hotel in Australia, even if I had that sort of money to throw around. High-end accommodation in Oz is generally poor value anyway, and a $150/night 5-star hotel in Southeast Asia will wipe the floor with a $800/night 5-star in Australia.