Reverie in Campbell bills itself as Australia's first 24/7 private wellness sanctuary: guests book online and enter a private suite by app, with no reception. Its Reverie Sauna sessions combine infrared heat with chromotherapy and red and LED light towers, and Contrast Therapy pairs the sauna with a cedar and steel ice bath. Sessions cost $59 for 45 minutes or $69 for 60 minutes, and a friend can join sauna bookings at a discount.