Sylvia's place is about as good as it gets for a single person staying in Sydney. It's adjacent to a bus stop on a quiet street, close to the Kings Cross train station, but you don't really need either the bus or the train. It's possible to walk to the Botanical Gardens in about 10 minutes, or 20 minutes to either Circular Quay or the Town Hall/Museum areas. Food and shops are just around the corner.

I was fortunate enough to be there during a storm, and the view as it was blowing through was amazing. The sunsets on the clear days were similarly impressive. I found myself spending the evenings there just for the views, which was comfortable considering I was traveling alone. For two people the place is rather small, and I think in that case you wouldn't find it as comfortable to "hang around" in, but for one person it's perfect.