I agree with all other positive comments – it’s a quiet neighbourhood; five minutes walk from Kirribilli with a great choice of eating options; close to transport; and the apartment is very aesthetically pleasing, and it has just about every gadget or amenity you’ll need.
I’ll just mention one small thing that will concern only very-early sleepers. There is narrow strip of privacy glass high on the wall facing the ‘common area’ corridor. And there is a light in this common area which switches off between 9.30 and 10pm. If you need to sleep before that time (as I did – I had a running race early next day), you will need an eye mask, because it will be quite bright inside the apartment. A suggestion for the hosts: some blockout fabric draped over this glass could solve this issue. It would remove the unwanted night-time light. And the loss of natural light would be insignificant, as there is an abundance of natural light coming in through the huge balcony window & door.