Our stay in Nick's home was delightful. It is a floor 43 so the view of the city is amazing. The building has an indoor swimming pool and a gym, and the carpark is included in the price. Nick met us in the street at a location he specified, and he indicated us where to park.
Afterwards, he explained to us everything very clearly (elevators, keys, carpark, swimming pool, lights, kitchen, etc.). After 15 minutes tour around the building, we felt at home and spent the following 3 days enjoying our city centre apartment life.
You can walk anywhere in the centre from there, but also get the train in Southern Cross or the tram in Bourke Street that goes to the centre of the CBD (which is 10 minutes walking, anyway). There is a shopping mall in front (at the station) with restaurants, bottle shops, a Coles and a big Outlet centre.
Thanks for the hospitality and the fast responses always!