Great location near the Botanical garden, only 10min walk to Kings Cross station. Lots of restaurants variety by the waterfront which is only a block away. Right across the road is a community center with gym equipments and some classes with a small fee (AU $14/day). Next to Botanical Garden is the Sidney Opera house, ferry terminal, and city center. Walking from the apt thru the garden is about 15-20min (but you will probably spend much longer in the gardens and along the waterfront) .
Jacuzzi in the building was not working when we were there. Other than that, we had a great time staying at Tabitha and Alastair's apt.