Lovingly maintained and improved by the same family for over 60 years, this mid-century modern masterpiece offers 4 bedrooms, 2.5 bathrooms, and a fantastic step-free floor plan along with one of Sunnyvale's finest locations an east-facing lot on one of the city's highest pride-of-ownership streets with no rear neighbors, supreme walkability, and elite Cupertino schools. Featuring a layout providing unmatched indoor/outdoor flow and ample natural light thanks to a central open-air atrium, vaulted open-beam ceilings, and floor-to-ceiling dual-pane glass throughout, two living areas (including a rear family room with wall-to-wall glass and an oversized slider) bookend a central kitchen and natural light-filled dining space. Rich engineered oak hardwood flooring runs across the single-level layout. Remodeled with permits by a licensed GC, the bathrooms showcase designer-selected finishes including solid wood vanities, LED mirrors, modern one-piece toilets, and mid-century fixtures. The master bath highlights a custom shower enclosure with solid porcelain slabs, a rain shower head, and a sleek glass door. This turnkey home offers nearly 1,700 sf of step-free living plus professionally maintained landscaping, dual patios, great walkability, elite schools, and unmatched commutability.