The photos don't do this place justice! We didn't want to leave. I could have sat out on the front deck listening to the birds and waves crashing all day! You don't even have to necessarily sit outside on the deck, you can see and hear the waves and birds from the lounge room as well.
You'll need to bring your own food (or drive at least 30 minutes or so, I think the pub at Alonnah is the only place open for evening meals), but other than that everything else we needed was there.
As for Bruny Island, highly recommend the cruise (bring winter clothes), the Bruny Island Cheese Company (who also now do their own beers), and the rendang wallaby pie at the Robert's Point Ferry terminal on the return trip.