The Olsen is nice, but nothing special. Most of all I liked the location in South Yarra.
It does no have anything special, it just a nice hotel with nice rooms, which are not too big. All room doors slam quite loud, so you can always here your neighbours entering or leaving the room. The gym is not really a gym, just some cardio and weights. i stayed during the Australian Open times, where hotels in Melbourne are extremely expensive. I payed 270$ per night, which I think was really overpriced. I am sure there are better hotels in Melbourne.More