Delivered last August to longtime Benetti yacht owners, the 213-foot Seanna is a floating showcase of custom fittings and furnishings. Italian walnut paneling with nickel inlays, wenge cabinetry, Botticino and alacatta marble flooring, and a marble stairway with nickel balusters and carved handrails are among the highlights of the interior, which also boasts a theater with a 100-inch projector screen, a large water-level gym with a side-opening swim platform, a library with a marble fireplace, and a pair of massage rooms. The yacht accommodates as many as 14 guests in two twin cabins, three double cabins, a large upper-deck stateroom, and a full-beam owner’s suite with his and her bathrooms and dressing rooms, a sitting room, and a study. Enjoy.