The apartment and host are exceptional. It is located across the harbour from the Sydney Opera House with a fantastic view to the Harbour Bridge.
It is a great location and very easy to get to any spot in the city.
The host, Alastair, was quick to respond to emails, offered recommendations when asked and a pleasure to deal with. I would recommend you consider this spot in Sydney.
My only complaint is that it is a single, short ferry ride back to Circular Quay!