I can highly recommend Casey's place for anyone looking for central accommodation in Melbourne. It was really easy to get to from the airport via the Skybus and tram system and the location is an ideal hub.
Casey has thought of pretty much everything, with helpful notes all over to make things easy. It was great to have use of a full kitchen and the three couches made relaxing after a long day super comfortable for our group of six. We were also able to check in early which was a huge bonus after a very early start to our day.
The only slight downside would be the noise from the city and live concert venue next door, but we expected this due to the location and all the other positives more than made up for any downsides.
Throughout our stay all of us commented on how great the apartment was and we would all happily stay here again in future.