We stayed at Petras place for 2 nights. Its located very close to a bus stop with all buses going to bondi junction, so you can get everywhere in short time. There is even a direct bus from the airport to her place! The bondi beaches and all the beaches south to it are in walking distance and it takes you around 15-20 min to get there!
The place itself is very nice. Everything is clean, you get your own space in the fridge and there is a visitors shelf with basic food supplies. The room is very big and it has its own balcony! You have a nice view of the park located on the other side of the road! We could even see the sun set over Sydney! We got to meet petra and her roomates morten and mel, and all of them are really nice and helpfull. If you go to Sydney i can only recommend her place! We would stay there again immediately!