High above the quiet, tree-lined avenues of Frankfurt-Westend, The Sanctuary redefines ultra-luxury living: A turnkey collector’s item that effortlessly unites German engineering precision with vibrant Mediterranean flair. Designed as an architectural refugium for those who demand absolute discretion, this two-story trophy residence offers a world-class living experience with zero compromise and no multi-year construction delays. The ca. 68 m² open-concept reception salon makes an immediate statement, bathed in light with solid oak plank flooring, handcrafted Venetian plaster (Peau de Serpent), a focal gas fireplace, and floor-to-ceiling glass wrapped in mirrored privacy glazing. A custom chef's kitchen, complemented by a welcoming entertaining bar, caters equally to intimate family mornings and grand-scale evening soirées. The main level reveals five meticulously planned rooms, anchored by a serene primary suite featuring Antoniolupi stone washbasins, Vola fittings, and a freestanding soaking tub—alongside a dedicated home office, a second en-suite bedroom, and a guest powder room. On the 7th floor, the experience reaches its crescendo: An indoor skyline spa with a custom sauna, rain shower, and WC opens onto an expansive rooftop terrace. Its crown jewel is the private, 12-meter heated rooftop infinity pool—powered by a photovoltaic heating loop for near-zero operational costs while framing mesmerizing, unobstructed views of the Frankfurt skyline. Engineered to the top-tier EnEV A+ energy standard (18.4 kWh/m²a) with a heat pump, underfloor cooling, and heat recovery, the penthouse guarantees absolute independence within a highly private boutique community of just eleven residences. Complete with three parking spaces (two underground, one private outdoor) and direct keycard elevator access straight into the penthouse, The Sanctuary isn't just an address—it's the ultimate urban retreat high above the financial capital.