Artfully Inclined Transforming a gaudy wall-papered 1970’s powder room into a contemporary oasis, Sieffert of Concrete Zen delivered a spectacular vanity that is much more like a small interior water feature than a conventional sink. Water falls from a minimalistic faucet down the long, sloped Platinum-colored concrete ramp sink into a narrow drain slot at the other end. Deceptively simple-looking, …