One of my favorite places to go is ABC in Melbourne central. Easy location, so you can get there, and anywhere after easily, and the train station is right underneath. The theme and the cocktail and drinks menu is unique, and so fun with a group of friends, or even for a date night out. They open at 11a, but go until 1 am! They have many deals, but my favorite is the jugs of cocktails during happy hour, and then a 4$ pizza to soak it all up. Its a great place to meet friends, and have a casual chat, or watch the city go dark outside on the patio. The best thing is, when happy hour is over at ABC the night is just starting, and your already in the center of the city! Some other places in Melbourne central after you've done some damage at ABC are the Lion Hotel and Equinox! Cheers!