Stockholm-based architect and designer Andreas Martin-Löf is no stranger to pared-back interiors or natural materials, and his latest project—dubbed the Ersta Penthouse—combines both.
Perched atop one of the city’s newest and highly anticipated developments, the not-yet-completed apartment is a stunning example of Nordic minimalism, and with a price tag of 57 million SEK (about $5.3 million), it’s the most expensive apartment ever listed in the Södermalm borough. The pièce de résistance, however, is the pad’s 1,600-square-foot rooftop terrace that offers open views over the islands and waterways that comprise the archipelago city.
“The combination of a vast private terrace, uninterrupted views, and the rarity of a penthouse with straight walls makes this an extraordinary property—something almost nonexistent in Stockholm," says Christopher Steen, real estate agent at Skeppsholmen Sotheby’s International Realty.
Wallin Bostad
Most notably, the five-bedroom spread features lime and clay plastered walls in a pale, warm shade of beige that perfectly complement the bright, beautiful oak floors. The three bedrooms on this main level each have a private bathroom. The primary bathroom is a true showstopper, showcasing luxurious materials like hand-applied marmorino plaster, terrazzo, and red limestone. It also sports a sauna with rich cedar paneling and a freestanding bathtub, creating a spa-like retreat.
Wood-trimmed picture windows that extend all the way to the ceiling line two walls of the great room, offering impressive views in every direction as well as access to the terrace. Clever design choices are everywhere, like the built-in bookshelves in the library, a custom cabinet in the living room that’s adorned with decorative wallpaper and hides the television, and a carefully fitted walk-in closet. Among the premium amenities are a private elevator, an onsite spa with a sauna and an outdoor jacuzzi, and two dedicated parking spaces.
Wallin Bostad
“The goal was to create an interior that aligns with the building’s sustainability vision while offering a bold yet timeless design," says Martin-Löf, whose firm has worked on everything from private residences to superyachts. “Everything, from the material choices to the color palette, was selected to endure over time, making this project one of my most innovative to date. High-quality residential architecture is like a tailored suit—the craftsmanship is in the details."
The penthouse is part of Ersta/25, an eight-story building that’s nearing completion at the intersection of Erstagatan and Fjällgatan in one of Stockholm’s most popular and historical districts. This new development by Wallin Bostad features two underground floors for storage and parking, and, designed with sustainability in mind, it uses green concrete, recycled steel, and geothermal heating. More than half the units have already been sold, with move-ins expected by Q4 2025.
From the article by Abby Montanez
