A subdued grey-and-white palette in the master ensuite is enlivened by multiple tile patterns. "I like to bring in dynamism and textural interest through materials," says Sarah. Carrara marble, a penny-round pattern on the wall behind the sink, and different patterns in the shower and on the floor make "your eye work a little harder to seek out the detail," she says. The oversize sconces create a statement. "They're not something you'd usually see in a bathroom."