Blainey North was let loose on level six of Crown Towers and the result is unapologetic. Wall-to-wall marble, silver-leaf wallpaper and a Vitality Pool screened by a curtain of purple perspex made by the surfboard shaper Hayden Cox. The water sits at body temperature, so you can float for as long as you like. La Prairie runs the facial menu, Subtle Energies handles the aromatherapy. Book the quartz hot-sand therapy, where warm sand and singing bowls do something you will struggle to describe afterwards. There is a Moroccan-style steam room for good measure. Six-star with no half measures. You did not come to Barangaroo to be sensible.