Wide angle photos make this small apartment look bigger than it actually is. (pretty common in AirBnB listings of course). That said, it's very clean and fine for a weekend stay for a couple if you are mostly getting out and about, and want to be close to the Southbank and city action. Would be cramped for 4 people, in our opinion. (nowhere to put 4 suitcases other than on the floor).
Getting the key from the lock-up at a venue up the road is a bit of a tricky operation but the host was responsive and helpful with messages back and forth to ensure we were okay with the check in.
Tip for those arriving from airport: though the Southbank Skybus does drop closer than going the city service, it takes around 1 hour to get there after many stops. We reckon it's faster to go to the main Southern Cross Station, then Uber or taxi to the apartment.