Visitors to the Springline complex in Menlo Park, Calif., are surrounded by a sense of comfort and luxury often found at high-end hotels: off-white walls with a Roman clay finish, a gray-and-white marble coffee table and a white leather bench beneath an 8-by-4 resin canvas etched with the words “Hello, tomorrow.” Springline’s signature scent – hints of salty sea air, white water lily, dry musk and honeydew melon – linger in the air.