Great stay at Silvia's place and highly recommend it. Very quiet neighborhood, about 5 mins (if that) walk to Kings Cross Station, with lots of eateries and cafes along the way to the station. Well connected to all parts of the city and suburbs and I found it very easy to get around to attractions/sights I wanted to go to.
The pool is extremely inviting, but unfortunately, had a packed schedule, so was not able to use it during this visit, but hope to next time around.
Silvia is a great host and made me feel very comfortable from the start. She is upfront and mentions that it is a shared bathroom, but it was never an issue for me, since I would use it just in the morning and late evening, and I was gone most of the day.
It was warm (summer) and like most/many homes in Sydney, it does not come with an a/c, but with the doors open at night, there is really good cross ventilation which keeps things cool. Open doors do bring in traffic noise, but wasn't an issue for me. Awesome stay!