The house was a good size for our group of 7 adults and 3 toddlers. It has a single storey (the basement was private) and I think only the toilets could be locked so we didn't need to worry about the kids climbing up the stairs or locking themselves in. It was clean and there were a good amount of supplies of linen, dishwashing tablets etc. The kitchen was also large and had the basics.
We had a very good stay - mum enjoyed the sunsets and kids had ample space to run about, and it was just minutes drive to the Healesville Sanctuary. Beautiful stars to see at night too.
Downside was that air-conditioning is only at the dining area so it was tricky dressing the young ones for bedtime while it was still warm in the early evening, before the temperatures dropped at night.
We appreciated Sandy and Ange responding even during Christmas and very much, for bringing a kid's cushion we had left behind, from the house to Melbourne, so it'd be easier for us to pick it up.