We about 90 minutes drive from Melbourne. Most people would just take the Western Highway towards Ballarat and turn off at Warrenheip. Mr Google says 1 hour 47 minutes in the screen shot below, but that must be on a busy day.
If you want a more scenic route, you can turn off the freeway at Ballan and come through Mount Edgerton and Yendon. We are happy to pick up WWOOFers from Ballan or Ballarat train stations.
Of course, your phone will know where we are if you just put in:
271 Flemings Rd
Grenville, Vic 3352