Detail speaks to the eye and the soul in these romantic open-plan suites. Idle away in a designer bathtub set on marbled floors by mirrored walls and a sweep of satin drapes.  Another has an open fireplace, clink champagne crystal by the flickering hearth lounging on a brazen splash of velvet. Cocktail cabinets are in vivid lacquers, natural linens are satin to touch, sustainable lotions from Sicily provide a fragrant balm. These are gorgeously seductive, romantic retreats.