A usually very savvy mate bought a beautiful new apartment off the plans about 6-7 maybe years ago. I remember saying not to get too comfy and be ready to dump it quick after its all built cause they all wind up junkie flats in Canberra and there was plans to build a ****load more. He didn't, probably 3 more 10+ level newer, shinier complexes have gone up and he sold it last year for a considerable loss.
Last yearly checkup with the financial adviser I mentioned property and the first thing he said was absolutely don't touch apartments.
That's obviously the Canberra market. I have no idea about elsewhere but with Opal and Mascot confidence in apartment living would be low. Certainly ownership, but if demand plummets it'll be good for low budget renters. That's when they turn into junkie flats.