We picked Diarmuid's place for spring school holidays, and the experience was fantastic. The house is a as close to a treehouse as it gets: rustic, classy, natural. It's quite comfortable, spacious. It's got plenty of room for eight people, nobody would feel cramped.
Amenities are plenty: plates, cookware, maps and guides, nice toasty hot water, heaters (no central heating, the house can get chilly), billions of books, etc. There is no WiFi, but the whole point was to disconnect anyway.
Parrots, Cockatoos and Kookaburras come visit the on the veranda all the time. Occasionally even the neighbour puppy, Millie, comes for a cuddle.
Diarmuid gave us a friendly call right when we arrived to give us tips on how to get around the house, stuff like how to light the fireplace and how to drive up the driveway properly (it's very steep).
One thing to be aware is that the house is on a hill, a 10~15 min walk down to Lorne beach. It's a good walk if you enjoy it, but if you have kids you'll drive to the beach more than walk. Not an issue either way.