We had a great stay here for the Australian Open. The space is perfect for two people, with good amenities including a full kitchen. Comfortable beds and great shower. The AO was within walking distance (approx 30 min) and Southbank restuarants close by. Overall the area was safe and we felt comfortable returning late in the evening. Paul and Dan arranged an after hours lockbox for us to collect the key which was great - but be sure to read the instructions provided closely, as our lockbox was located at the end of the street, which took us a while to find at 1am (but that was our fault as the location was geo-pinned in the instructions!).
I would say the apartment is probably too small for 4 adults for extended periods, but otherwise a reasonable living space. We had one issue with the washing machine not being clean, but this was rectified as soon as possible by the hosts. Would definitely stay here again, thanks for the great stay.