I recommend Yi's appartment. It is in great location: walk distance to CBD, Yarra river and Royal botanic garden, and it is also in the free tram zone. The appartment is small but equipped with everything we need for the 6 days' stay.
It has a woolies metro downstairs and we also found wws and aldi around with 8 mins walk.
Yi is a great host. She gave me local tips and answerred all my questions. During the stay, we were not able to make use of the washing machine as it made huge metal-to-metal crash noise at our first wash. Yi responded quicky and hope it get fixed soon.
Overall, we all enjoyed the appartment and we definitely will come back again for our next Melbourne trip!