Rooted in biophilic design, this bathroom pairs textured clay-plaster walls and a charcoal polished-concrete floor with a hand-carved stone trough sink and matte black taps. Overhead skylights and a wood slatted screen bathe ferns, river pebbles, and a shallow water rill in daylight. A floating walnut vanity, a broad mirror, and softly lit arched niches add warmth and tactile contrast, forming a serene indoor-outdoor retreat.