We stayed here six nights last month. I'd hemmed and hawed about it before committing to the Marriott. Sir Stamford beckoned. The Intercontinental was also an option. With my status with SPG, the Westin seemed to be my first option yet it was a little too far from Circular Quay.
We were not disappointed--our room had a great view of the Opera House. We were able to use the Club for breakfast. Only problem was late night club offering disappeared quickly. Came home from dinner a couple of times at 9pm and there were no dinner munchies for us.
But you cannot do any better with the location. We bought a Multi Pass and could use the buses, subway and ferries which were all a minute away from the hotel. Service in the hotel was just fine, we enjoyed every bit of it.