Spent 5 nights here to explore the city. The location is convenient. We got the train from the airport, just took the green line and got off at Museum station. The hotel is opposite the station. We booked a deluxe studio with balcony. I was a bit concerned as the room overlooked the main road and the park, but actually, with the air conditioning on, the road noise was not a problem at all. We were told there was renovation work going on, but the only thing we ever saw was a couple of workmen in the lift one day - no noise disturbance at all.
The room was very spacious with two king beds, table and chairs as well as arm chairs. The bathroom was fine. The bed was very comfortable. The kitchen area fairly well equipped for basic catering.
When looking for somewhere to stay, we looked for somewhere that included breakfast. The thing they do here is put milk, a couple of slices of bread, butter, jams, cereal in the fridge for you to make yourself. It worked very well and was more than adequate to start the day with!
There is a free shuttle bus which does a circular route around the city, and one of the stops is near the hotel which is very convenient.
It takes about 20 minutes (fairly fast walking) to walk to Circular Quay and about 10 minutes to walk to Darling Harbour.
We found the staff at the front desk helpful.
The only really negative thing to say is that there was no free wifi.
We found it a good base for our time exploring Sydney, and would stay again if we ever come back.