My husband and I booked 3 nights at the Stamford Plaza at a good rate on lastminute.com. It was very easy to get to via the airport & hotel shuttle. The apartment was lovely, clean and comfortable. It was great having a kitchen and seperate sitting area.
We loved the location and we have to recommend eating at Il Solito Posto across Collins Street from the hotel, down the little alley: fabulous.
As we're travelling for a few months, we were very appreciative of the laundry facilities on the top floor and the fact that they didn't overcharge for the detergent.
Our only complaints would be the following: the gym was tiny and got very hot; the pool was smaller and not what I would consider to be 5*; the concierge gave us a Thai food recommendation one night at another hotel (Alice Thai in Victoria Hotel) and it was horrible. We were not impressed that a 5* hotel concierge would send us to a 3* hotel and what is possible a 1* restaurant for dinner in city of amazing restaurants.
Other than those minor rants, we would stay at Stamford Plaza again.