Staying with Katherine and Geoff was just right for us. Their accommodation is self contained and very comfortable. They were very welcoming and Katherine's hamper was an absolute lifesaver the first night! If you need to be located up in the northern suburbs of Sydney as we were then I can heartily recommend Katherine and Geoff's place. We had a car and there was ample parking but if you need public transport Mona Vale Rd is close by.