My stay at Nga's was just perfect!
The apartment is only 20 minutes from the CBD and Southern Cross Station by tram. Also, there are plenty of nice neighbourhood cafes and shops, which are not touristy - you will feel like a local soon :).
Nga herself is the perfect host - considerate, welcoming and very easy-going. Even though she had to work, she took the time to chat quite a bit during the evenings. On top of that she offered me her self-cooked meals and even a ride to a hiking spot. Also, she gave me valuable tips on what to do (and especially where to eat ;) ) in Melbourne.
The apartement is also super cozy, very beautifully decorated and very clean.
Don't look further - you found the perfect Airbnb :)