Marcel and his family were wonderful hosts. Always contactable, friendly and personable, and constantly offering activities for the children to do whenever he walked by our house. We did have some hiccups with the house power, hot water etc, but Marcel was always there to help us settle them.
The shouse itself is fantastic, even nicer than the photos make it look. Everything was spotlessly squeaky clean, the layout was spacious yet cosy and welcoming, rooms were large and comfortable. The kitchen was well stocked and appliances worked flawlessly. The surroundings were very pleasant with lots for the kids to do - we kayaked on the lake twice, gathered eggs from the chicken, fed the goats and sheep, and the kids spent a long time on the tire swing and climbing the tree / ropes in the backyard.
It's a very short drive (~10 mins) to Margaret River proper.
Do take note though that WiFi may not be available and phone reception is a bit spotty.