I rented this house and the bottom cottage for my 50th for a group of friends and family.
To present the positives first, the house and view looks just as it does in the pictures, which is beautiful. The kitchen was well appointed. The heating is effective (we were there in winter). The owner let us check in a couple of hours early, which was sincerely appreciated, and she was very quick to respond to questions and was helpful, which was also appreciated.
There were some downsides. The traffic noise from Barrenjoey Rd was constant between 5am and 7pm, such that we didn't enjoy sitting outside to appreciate the view, and we couldn't have the doors open either, which was a great pity, as I'd pictured doing that. Most of us woke at 5am when the traffic started and couldn't get back to sleep. I think most houses in Palm Beach must have this issue. If you weren't sensitive to traffic noise this place would be much more suitable.
There is also limited acoustic separation the house. If people are talking in the lounge, it's very audible in most bedrooms. Sound also travels between bedrooms.
We also found out a few things just before arrival that weren't ideal. The first was that it's a shoes-off house. We had rainy weather, and going between the top and bottom house meant taking shoes off at the back door on the wet deck...with wet socks as a consequence. Also there's no spot at the back door for shoe storage (there is shelter at the front door), so most of our shoes got rained on because we forgot to pull them inside before the rain started. With a large group, it's also a bit icky with socks, because kids drop bits of food on the floor, which stick to your feet. We couldn't find a vacuum to keep the kitchen floor clean, just a broom that wasn't especially effective (that said, we didn't ask if there was a vacuum somewhere).
Finally - the exit was pretty stressful. I paid a very substantial cleaning fee, but we had to wash and put away all the dishes (you can't leave them in the dishwasher) and carry all the rubbish up the very, very long set of steps to the bins. I feel that with such a large a cleaning fee, it would be reasonable to leave clean dishes in a dishwasher and have someone else empty the bins. If the cleaning fee had been lower I would have felt differently.
Overall a generally positive experience, but it wasn't the right place for me because peace and quiet is so important to me.