I just stayed at Mel's place for 2 nights for my sister in law's wedding which was in Hunter's Hill.
Pros:
Good location
Nice view of harbour
Beds were comfy and clean
Decent size with 3 good sized bedrooms and 1.5 bathrooms
Good communication with host
Cons:
No central air/ heat - I am american so obsessed with air conditioning, I know for Australians this isn't as much of an issue. At night it was a bit cold but Mel provided with a lot of blankets as well
No microwave- my sister in law came to stay the second night with her son who was 6 months and she uses formula. There was no microwave which was inconvenient as she then needed to boil water for sterilisation and heating etc. maybe there was a microwave but I didn't find it.
Loud: i have a 2 yr old and my sil had the 6 month old, unfortunately the house is a bit loud as you can hear people coming up and down the stairs or hear downstairs etc when you are upstairs sleeping. This wouldn't be an issue for people who all go to bed at the same time, but with the baby waking in the night and morning I could hear my sister in law in the kitchen etc.
On the first night, when I was staying just with my daughter, we had a lovely sleep.
Coffee machine was broken: my husband and brother in law are obsessed with coffee. Mel let me know ahead of time that the coffee machine was broken so We brought a cafetera for the stove. Unfortunately the stove was induction so the cafetera didn't work. This wasn't an issue for me as I don't drink coffee but for parents with a 6 month old this was an inconvenience lol.
Overall:
We had a good stay. Having 2 families in the house may have been a bit too much so my thoughrs are that it would be good for one family or for friends etc who all are going to bed at similar times. It would be more convenient to have a microwave and coffee maker for all :).