Hi Marcel,
We often go to the Walkerville Camping reserve which might be about two and a half hours from Melbourne...we live near Wonthaggi and it takes us about an hour. You can have powered sites, campfires in drums that you hire from the park and they have clean ameneties blocks for hot showers
It is a beach front park and nice and quiet during the winter months, it faces hortheast so you are sheltered from the winter blows. In summer it is packed and you can't have campfires
The sites are set in the costal bush and are reasonably private outside of peak times. We love going there for a quick weekend getaway.
Pat
http://www.coastalcampingvictoria.com.au/campground.php?id=61