I recently stayed at the Four Seasons hotel in Sydney with my husband for two nights. We were on our way home from New Zealand and had a two night stopover here. We thoroughly enjoyed our stay here and the service was excellent. The bed was incredibly luxurious and I had the best night's sleep here. The breakfast although a little pricey was definitely worth it for the fantastic spread. If we were there for longer we probably would have had breakfast out on other mornings as there were many places nearby which were reasonably priced in The Rocks (turn left out of the hotel).
The location of the hotel was perfectly situated next to the harbour so it was easy to walk to the Opera House and the Harbour Bridge. This was also the place where the ferries went from so you can jump on a ferry to Manly Beach (half an hour boat ride away) or many of the other places nearby. You get great views of the harbour from the boat. Just behind the Opera House are the Botanical Gardens which are also perfect for a walk.
My husband used the gym in the hotel and was very happy with the facilities there. We did try and book a spa treatment but unfortunately they were fully booked for the time that we were there. I would advise booking before your arrival to avoid disappointment. The pool area was quite small and next to a main road so it wasn't really what I was expecting. However, we weren't really in Sydney to chill out by the pool when there was so much to do so it did not really matter.
There was a cool bar on the ground floor of the hotel but we didn't have time to go in for a drink...maybe next time.
I would definitely recommend the Four Seasons, Sydney and wish that we had stayed there longer.