4 ½ rooms attic flat

First occupancy 2026 – Exclusive 4.5-room penthouse with panoramic lake views in Altendorf SZ In a privileged location on the Obersee, this extraordinary 4.5-room penthouse awaits you. With around 150 m² of net living space and an impressive usable area of approx. 307 m², this attic apartment combines modern design, high-quality materials, and a spectacular view of Lake Zurich and the surrounding mountain world. Large window fronts, light-flooded rooms, and a timeless interior finish create an exclusive living ambiance that meets the highest demands. Highlights * First occupancy from 16. August 2026 * Exclusive penthouse / attic apartment * Approx. 150 m² net living space / approx. 307 m² usable area * Dreamy panoramic lake views as far as the Alps * Spacious living and dining area with fireplace * Modern design kitchen with cooking island and breakfast bar * High-quality kitchen appliances and elegant interior finish * Two stylish bathrooms * Whirlpool as an exclusive wellness highlight * Pergola with sides that can be closed all around * Large-format floor tiles and subtle recessed spotlights * Energy-efficient geothermal heat pump * Comfortable underfloor heating and cooling system * Underground parking spaces available * Sunny and excellently connected location * Altendorf train station reachable within a few minutes' walk * A3 connection Pfäffikon SZ in the immediate vicinity This exclusive attic apartment combines modern living comfort, incomparable views, and the highest construction quality into a unique home on Lake Zurich. **Swiss Twins Immobilien | Real Estate Management** accompanies you personally and competently – from the first viewing to the handover of the keys. Arrange your personal viewing appointment today and discover this extraordinary residential property.