Discover the unparalleled serenity of Treasure Island, an exquisite 80-acre private island where your dream home or family compound stands as the sole residence. Nestled between the tranquil waters of Halfmoon Lake and Blind Lake, this idyllic retreat offers ultimate privacy amid abundant natural beauty, with elevated, breathtaking views from a charming Nantucket-style main home and a luxurious guest/boat house. Step inside to a crisp, airy interior featuring gorgeous white custom cabinetry, elegant wainscoting, granite countertops, state-of-the-art appliances, and stylish tiled backsplashes and floors. The open main floor plan is flooded with natural light through numerous door walls and windows, perfectly framing the picturesque surroundings. The en-suite primary retreat includes a cozy sitting area, a full bath with a classic clawfoot tub, a spacious tiled shower, and beautifully tiled floors and walls. The boat house is a masterpiece, complete with a hoist and first-class woodworking. Above, the guest quarters boast a convenient kitchenette, comfortable sitting room, outdoor shower, and stunning barreled wood ceilings that extend to a covered balcony. Outdoors, enjoy a wrap-around deck with see-through glass panels, multiple patio areas, a year-round permanent dock/pier, and professionally landscaped grounds. An oversized 6-car garage provides ample storage, with a large bonus space above ideal for an apartment. Conveniently located just outside of Ann Arbor, this property makes the perfect private retreat or family compound, blending seclusion with easy access to urban amenities.