Whoever designed the space knew what they were doing. Not only does it have epic views of the harbour and is a short walk from the Circular Quay dock, but it is kid-friendly. There are spaces where kids can go and play so they can leave the adults to enjoy some of the exhibitions. I will be back next time I'm in Sydney.
I recommend taking your time and going through whatever is in the free exhibition space before paying for whatever is the main exhibition.
Museum of Contemporary Art Mural Circular Quay Sydney