You could be forgiven for mistaking this 12,000-square-foot, six-bedroom modern masterpiece on “Millionaire’s Mile” for an exclusive resort: with sculptural, multi-story interior columns, folding glass walls, endless spa bathrooms, and luxurious contemporary décor, it’s the ultimate vacation retreat. If you tire of all that indoor luxury and want to venture beyond the massive pool and deck, walkways will take you to 100 feet of private beachfront and a yacht dock.