We had a lovely stay at Bronwyn's place. She met us for check in and was very helpful and easy to communicate with. We had our 9month old daughter with us and the apartment was fairly child friendly and had a great big bath.
South Yarra is a great spot and quiet central to the city, only downside is a bit of highway noise. We kept the windows closed to block it out.
We really loved Lawson Grove, it was a very sweet little part of the neighbourhood and the cafe downstairs is great.