Pinned for the idea. Not sure how much I like the extension over the toilet. If were to do, vanity top should be one piece, with no cut line. Also: Consider how much the extra counter space would be needed.
Built In Make Up Vanity with Blue and Grey Ikat Chair, Transitional, Closet. Gorgeous dressing room features a white built in make up vanity topped with white marble under a framed mirror illuminated by Ruhlmann Single Sconces alongside a blue and grey ikat chair.