The house is a large and on a multi-acre lot in a wealthy outlying neighborhood of Sydney. The house is about twenty years old but well maintained. The rooms are large and there are multiple shared family/living rooms. Jimmy was friendly and helpful.
You must have a car to reach the house. Trains and other public transportation do not go close to the house. That is a benefit because there is no traffic in the area. But it also means you are far from the typical Sydney attractions. It was not an issue for me because we mainly visited friends in the Dural area.
If you are visiting Sydney in the winter (June-October), bring warm clothing for sleeping. Houses in Sydney are built for warm weather (lots of stone and tile, gaps in the doors and windows, minimal heating inside the house) and are cold at night in the winter.