St KIlda is located on the coast east side of the city and within easy tram ride into the heart of the city.It is a cosmopolitian casual suburb with some great cafes. Eat at the Stokehouse..lots of young people drinking with lovely view of the beach.
Its close to Chapel Street and Toorak Road.
MUST DO: Shopping
Bridge road - Richmond oulets
Brunswick Street - Fitzroy funky
Chapel Street - South Yarra trendy
Department stores city.
See Southgate and southbank - restuarants/cafes
The Docklands - ditto
Queen Victoria Market
Take ferry ride to Docklands
3 days in St Kilda will be great,there's heaps to do.If your into live music check out the Prince of Wales and the Espy and all the restaurants along Fitzroy St. and Acland St.It has a pretty good beach and they have weekend markets along the foreshore,Sunday 10am-5pm.There is also lots of public transport such as buses and trams.
For shopping,check out Chaple st. South Yarra (often called the Fashion strip of Australia) and Bridge Rd. Richmond.