We were in Melbourne to see the tennis so for us the location of Jade's apartment was perfect - very central and close to all public transport, as well as within easy distance of the station, art gallery, Federation Square if you were happy to walk. There is definitely noise from the adjoining railway track but as we were out all day this did not worry us unduly.
Check in was very easy and Jade always responded very quickly to any inquiries, and was very accommodating regarding our arrival and departure time.