Sam and his wife were extremely kind and their hospitality was first class. Castle Hill is only 30 min drive from Sydney City Centre (Opera House etc.) so the location is perfect if you want your own privacy but still easy access to the city. I would say that car is a must if you decide to stay in this place, as it might take some time to get to the city with public transportation. But we enjoyed our stay very much, we can fully recommend this place to other airbnb guests!