Spent two nights here in November and found it lovely and calm. It was very busy but the rooms must be well insulated as you couldn't hear anything with the door shut. We overlooked Circular Quay which was gorgeous. Breakfast buffet was nice. Spa was gorgeous! Husband and I both had massages and facials which were amazing. Very zen!
The hotel is tucked away and up a bit of a hill but unless you are wearing high high high heels it is an easy walk to restaurants and everything at The Rocks.