House Beautiful for single men. Von FÃœrstenberg breezes through some dramatically styled interiors, a land of carpeted banquettes and elegant antiques. These are not the ingenious low-budget designs of newspaper feature stories: the men represented here may have a living room that accommodates 24 for cocktails, a stained glass window by Frank Lloyd Wright, or a bathroom with a Kilim rug on the floor. One spent $11,000 on a mirror-polished chrome exercise block for his bedroom, another invested a princely $45,000 on a single room with a spectacular view; both rooms make bold statements. Egon identifies special furnishings or techniques, and comments on color, space, and showmanship. One thing's sure: Alice doesn't live here any more--Marvin Hamlisch and Perry Ellis do.