create a stunning bathroom interior with a modern minimalist design highlight the walls with luxurious gray marble tiles featuring subtle white veining use a combination of natural oak and light walnut for the cabinetry and shelves accentuate with matte black fixtures including the handles faucets and other hardware for a sleek contrast incorporate ambient lighting that casts a soft warm glow add subtle greenery such as ferns or succulents to bring a touch of nature into the space the atmosphere should be serene and calming embodying a spa like tranquility architecture