Nothing 'wrong' with it, just not much to do there in comparison to Sydney. Melbourne can be done in a couple of days (esp the city) Crowne Casino is good if you can get there - in the city.
Didn't do the Great Ocean Road trip so can't comment on that.
Plus the weather is changeable, if you like UK you'll like Melbourne
BB x
Depends on what you like doing. Nightlife is amazing in Melbourne, I on arrived on friday and had to leave monday. On friday i went to a live music night, saturday to a hard dance festival (Q-Dance) and sunday went to the market in the day and had a few beers at a bar at night.
Theres loads of great shops and other things to do like a huge in door climbing wall.
Weather wise, i went in december, 19th to 22 i think. and i was walking around in shorts and tshirt. It was cool but still sunny
Melbourne is great fun, Sydney is also great but Melbourne is so much more chilled out, Sydney is like the London of Australia, Melbourne is very relaxed and generally 'cool'