I just did the Jewel in January this year and I stayed at the Hilton which is not too far from the Port walking but we took an Uber which was quick since we had luggage. It is an amazing hotel. The Four Seasons is literally right by the port and I believe there was a Hyatt as well. You are going to Love Sydney. So much to do so plan plan plan. The Opera House, The Rocks, The Bridge, Do a Bike Ride with Bonza Bike Tours, they take you all over Sydney. It was a great morning Bike ride into early afternoon. Have a great time. Def book your hotel EARLY if you end in Auckland. Its super expensive for Hotels there. we ended up paying like $500 a night for the Hilton Auckland but it is literally right outside the port on the water. also a beautiful hotel.