Bath Room, Enclosed Shower, and Concrete Floor Natural light is an important factor in creating biophilic spaces. The primary bathroom of this house in Venice, California, sits deep in the plan but has three sources of natural light—a skylight, small window, and translucent glass wall shared with the kitchen.   Photo 8 of 9 in A Minimalist Duplex in Venice, California

A Minimalist Duplex in Venice, California

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The master bathroom has a small window and a large skylight above the shower—and shares a translucent glass expanse with the kitchen, where it becomes the backsplash. "Even though it’s a buried room," Don says, "we have three sources of natural light. For the shower, we made a very high curb so you can stop up the drain and turn it into a big soaking tub. We used white, one-by-four-inch or one-by-six-inch Carrara marble tiles from Royal Stone and Tile. They come on a 12-by-12-inch sheet. I got the small tiles because you can use them to work the bottom plane into the shower."