Our family of 7 was able to fit comfortably into the Southbank apartment, and like the pictures show - the view & location are amazing. We were able to walk to pretty much anything we wanted to do, and the tram and train stops are just steps away for anything a little beyond walking distance.
The apartment itself was a little disappointing - the apartment is old & worn and the bathrooms are on par with a cheap hotel. Everything was functional, but for the price we were expecting some nicer & more modern amenities.
If you are looking for location & views, this is the place for you. If you want to stay in a place with a few luxuries and super-clean then you may want to keep looking.