Ina and I had a great time in St Kilda. The apartment is in a secure building, right next to a supermarket and liquor store. Around the corner are a myriad of cafes and restaurants. The beach is 100m walk from the apartment, Luna Park is over the road and Melbourne CBD is just a 20 minute tram ride - what an awesome location !
I have to recommend 95Expresso on Acland St (a short walk from the apartment) for breakfast - the "Hang Over" cure is awesome :-)

The apartment itself is a large single room with a queenside bed. It has a small kitchenette with a stove, oven, fridge and dishwasher. There is also a washing machine stowed away if you need it.

I highly recommend this apartment if you want to stay close to the beach with plenty of restaurants to choose from.