Have fun bro, I dont know where the saville is but cruise down to "southbank" and sit back and watch the day go past, grab a nice coffee or beer or whatever, be sure to check out the show at 11pm on the hour along south bank outside "crown" (crowns the casino) they have these huge gas flames going up into the air, worth going in there at night to check it out :-)
Other stuff to check out?
The Aquarium which is opposite southbank. - they got a GIANT squid there at the moment and its a first class aquarium )
Take a ride on the trams :-)
Check out crown casino - although being american its nothing compared to the crazy shit u got over there )
Check out the Melbourne Zoo, thats a great zoo! or check out Werribee Open Plan Zoo a bit out of Melb )
Check out hte Melbourne Museum
Check this site out for cool stuff to do while your here
http://www.visitmelbourne.com/
What else? The have some nice restaurants, nice cafes, take a fucking boat trip down the yarra, thats nice, make it at dusk ), catch one at southbank again!
Thats it, I'm in Geelong an hour and a half outside Melbourne, have fun dude, I'd come and say gidday if I hadnt had a skinfull of VB, go grab a big "scooner" of VB at a pub btw )
cheers
Justin