Ernesto Santalla transformed an outmoded his-and-hers bath in a Tudor-style DC home into a light-filled, contemporary retreat for two. He enclosed the travertine shower, which divides the two bathroom areas, with floor-to-ceiling glass, allowing daylight to flood both spaces and making each appear larger. Clean-lined, dark cabinetry of dyed lacewood and ultra-modern plumbing and light fixtures convey a minimalist aesthetic. The creamy limestone flooring and countertops and frosted glass entry door all contribute to the sense of light and openness. Located in the “hers” section of the bathroom, the tub is spacious and elegant.