This T4+1 duplex penthouse, located in the prestigious Costa da Guia area in Cascais, offers an exclusive and private living experience. It stands out for its spaciousness, natural light, and stunning views of the sea and surrounding nature. With a private gross area of 256 square meters, the apartment is spread over two floors. On the lower floor, you’ll find an entrance hall, a generous 48-square-meter living room with a fireplace and a sea-view balcony, a fully equipped kitchen with access to a balcony overlooking a pine forest, and a suite with a walk-in closet and private balcony. The walls on this level are fitted with heating panels. The upper floor features a second living room with a large, open sea-view balcony, two bedrooms with built-in wardrobes, a full shared bathroom, and an additional en-suite bedroom. The property also includes a private garage box with an electric vehicle charging point, central heating on the lower floor, and air conditioning on the upper floor. With east-west solar orientation, this penthouse perfectly combines comfort, privacy, and a prime location within walking distance of Casa da Guia, a variety of local amenities (bakery, pastry shop, banks, supermarket, etc.), and close to the Guia bike path connecting both the Cascais Marina and historic center and the famous Guincho Beach.