Honest observation: the space is small like a studio as seen in the pictures. In person, the bedroom felt a little cramped with the couch and table under the TV next to the door. The kitchen also felt cramped so if you have two people, you have to sit in an L shape at the kitchen table. There was a lack of kitchen supplies, but the host lives right outside in her own house so it was easy to ask her for additional tools/supplies. The bathroom was surprisingly big. To free up a lot of space, I would get rid of the couch and have 1 queen bed. Otherwise, space is much better for 1 person. Just remember, this is not a hotel and land is expensive in Sydney, even if this location is far from downtown and very close to the airport.
Nevertheless, I had a great stay and highly recommended this place! What I liked was that the host and her father were very kind and approachable. The location is only 5-10 walk to really good and affordable Vietnamese restaurants in the area. I'm a native Vietnamese and my standards for Vietnamese food are very high, so I was pleasantly surprised to find yummy authentic food and grocery stores in the area. Public transportation to downtown was a breeze and soooo cheap. Now you can just tap your credit card or mobile pay instead of adding money to the free transportation card (it's the same rate). Sydney is beautiful, so I highly recommend going downtown and to Manly beach across the harbor (you can even take bus there, but the 30min ferry ride is much more scenic).