Soon after a couple moved into a Kalorama apartment, they asked Jonas Carnemark to replace their bulky whirlpool tub with a new shower. But as they discussed taking the 1990s-era primary bath in a fresh, modern direction, the project quickly morphed into a total overhaul.

First, Carnemark made a clean sweep, removing everything to arrive at an open space housing a large shower, a double vanity and a toilet screened by a partition. He proposed displaying an oversized stone slab as an organic work of art in the shower. A hunt ensued until his clients fell in love with a quartzite specimen at Gramaco. “It has some really cool richness and picks up the trees outside,” says Carnemark. “We tried to minimize everything else in the room.”

A sleek Artelinea vanity fit the bill. Made entirely of glass, it combines matte, back-painted-glass door fronts and an undulating “frosted-glass top that flows into polished glass in the bowls themselves,” explains the designer. Completing the minimalist picture are heated and slip-proof porcelain-tile floors, touch-latch shower niches to stow away toiletries and a linear shower drain.

“This kind of bath is so peaceful to me,” reflects Carnemark. “Some might say there’s not enough going on, but I like it when there are just a couple of points that really draw your attention.”

CREDITS + DETAILS—Bath Design & Contracting: Jonas Carnemark, CR, CKD, CLIPP, CARNEMARK design + build. Floor & Wall Tile: architessa.com. Quartzite Slab: gramaco.com. Slab Fabrication: eurostonecraft.com. Plumbing Fixtures: fantini.it through konstunion.com. Vanity & Mirror: artelinea.it through konstunion.com. Custom Glass Panel: proshowerdoors.com.