Vintage Soft Pad chairs by Charles and Ray Eames for Herman Miller (an eBay find) and matching new Eames desk and storage units, also from Herman Miller, furnish a workspace on the mezzanine level. "When we're both at home we speak to each other all the time," William says of the openness of the house.   Photo 8 of 12 in Peek Inside the Frank Gehry Rental of an Emerging L.A. Furniture Designer