Stunning Mid-Century Modern retreat in Mercer Island's coveted South End. This beautifully updated 4 bedroom + den, 3 bath home blends timeless architecture with thoughtful modern upgrades. Vaulted ceilings and expansive skylights flood the home with natural light, while peek-a-boo views of Lake Washington and the mountains create a serene backdrop.The open concept kitchen and great room are designed for everyday living and effortless entertaining, featuring new flooring, cabinetry, and fully renovated kitchen and baths. Three bedrooms are conveniently located on the main level, including a spacious primary suite with a walk-in closet and luxurious 5 piece bath.Step outside to expansive entertaining decks overlooking a generous grassy yard--partially fenced and perfect for play, pets, or peaceful relaxation. Enjoy mini-split A/C and heating for year-round comfort, plus a finished attached 2-car garage.Ideally located near the Mercer Island Beach Club, Clark Beach, Pioneer Park trails, QFC, and Starbucks--this home offers the perfect balance of style, comfort, and community in one of the Island's most desirable neighborhoods.