Stephen Shubel finds inspiration everywhere. Most recently it was the spas he enjoyed at the Biltmore Four Seasons, Santa Barbara, and Beverly Wilshire, Beverly Hills, that caught his attention. "They were unbelievable," he says. "I simply had to add something similar to my Sausalito home." So he did. With a built-in sound system, mood lighting and aromatherapy among other amenities, "It's the most serene environment, truly a place to restore my body and refresh my spirit." It doesn't hurt that the San Francisco skyline, Bay Bridge and Angel Island can be seen from the windows. The spa, which includes an ensuite sitting rooom, is floored in creamy white, Arizona river rock installed by contractor Dan Obrien for a garden-like feel. Fittings from Restoration Hardware complete the look. Too bad Shubel is so busy with design projects he isn't there as often as he'd like.