With the clean lines and do-touch sophistication of a modern diamond-tufted, Deco-inspired sofa to set the scene, easy elegance is the name of the game. This room has fantastic flow: Slipper chairs slip into a bold pattern in a soothing palette. Those watery hues carry over into the artwork. Its frame's warm silvery finish is echoed in the metal on the coffee table. The look is crisp and inviting at once.