Bathroom at a GlanceWho uses it: A coupleLocation:Ottawa, OntarioSize: About 45 square feet (4.2 square meters); 7 feet, 10 inches by 5 feet, 9 inchesDesigner: Susan Ozipko of sO InteriorsBefore: The hall bathroom in this couple’s midcentury modern house in Ottawa, Ontario, hadn’t been updated since the 1980s. It had served as the main bathroom for the whole family, but with their nest emptied, the couple wanted to update it for themselves. Interior designer Susan Ozipko described its condition as “not user-friendly.” The tub-shower had bifold doors, there wasn’t enough storage, and everything felt cramped.Replacing the tub with a roomy shower stall made the room more functional for the couple. The flat-panel maple vanity and unit over the toilet give them plenty of storage. The bottom of the vanity has a large drawer for storing extra towels. And the wood material and style of these pieces nod to the home’s midcentury modern architecture.The biggest space-saving hero is the wall-mounted toilet. Rather than protruding into the room, its tank hides behind the wall. (The flush panel can be removed for access.) The toilet bowl doesn’t take up floor space, also making the room feel airier.The color palette and lighting keep things bright. One of the homeowners is a geologist, so the designer put a lot of thought into the natural stone tile choices. The shower surround is Statuario marble and the rest of the walls feature a stone mini brick mosaic in similar hues. Ozipko floated the mirror off the wall so she could add lighting behind it. And because the room was windowless, she added a solar tube in the ceiling to bring in natural light.