Melbourne is a great place to be.
http://www.news-travel.info/october/...-australia.htm
http://en.wikipedia.org/wiki/Melbourne...and is repeatedly voted the worlds most liveable city...
Roxburgh park is a relatively new estate, located on the northern outskirts of Melbourne (about 20km from the City centre), on the Road to Sydney (The Hume Highway).
As far as a place to stay.. by all reports very nice. Certainly with ready access to road networks and amenities. New train station construction underway...less than half an hour from the Airport...
Beach... not so sure about that. It would be harder (in melbourne terms) to be further away... About an hour, maybe...
try a look at
http://www.roxburghpark.com/ for what is close by.
There are contact telephone numbers and e-mail addresses for the residents association here too.