The house and surrounding garden are beautiful and secluded. The rooms and living spaces are comfortable, spacious and fitted our group of 8 easily in the main sitting area. Cooking at the house is good with nice appliances and a BBQ. Forewarning about the BBQ it had issues with the ignition switch being broken so you need to be willing to manually light it. I would imagine kids would not lack activities to do, from playing in the garden to DVDs and Nintendo Wii. If you are an older group without young kids I would recommend bringing your own DVDs as some of the ones at the house are fairly old or more child orientated. The pool is fenced and safe as far as I can tell, but watch your kids as the water can get quite deep.
The house is well located for a variety of activities, it's only a simple drive to get to the Margaret River or Busselton, and a much shorter drive to Dunsborough. The restaurants are mostly wonderful, but be prepared for the price tag on some of them. The beaches in the area are lovely particularly Meelup and Smith's Beach, I would recommend families to visit in the summer time.
Overall the house was a great experience, and Alicia was very helpful and informative for any questions I asked, her info booklet that she emailed and had printed out in the house itself was very useful as well.