source: Luxe Living Interiors Amazing powder room design with gray single vanity with carrara marble top and backsplash, polished nickel wall-mount faucet, white porcelain bowl sink and distressed beveled mirror flanked by French sconces.
Rather than using standard cabinetry, consider creating a sink vanity out of an old dresser. A cabinetmaker can cut a hole in the top of the dresser to fit a drop-in sink. Cover the top of the dresser with a slab of countertop in the material of your choice. Paint the dresser a punchy color to update it even further