*Photos and floor plan coming soon.* Introducing Residence 3L at 539 4th Street set on one of Park Slope's most coveted tree-lined park blocks in the heart of the Historic District. The building was originally designed by Thomas Bennett in 1905 and thoughtfully restored in 2017 by Peter Szule and Hila Stern of Moulin & Associates, who achieved something rarely done well: delivering full-floor luxury condominiums without sacrificing pre-war character. The building's original details balustrades, newel posts, ornamental flourishes, and the preserved facade have been meticulously restored, and the lobby has been reimagined with marble cladding. 3L is an expansive 3-bedroom, 2-bathroom home spanning 1,188 square feet, where considered design meets everyday livability. Past the entry foyer, the apartment opens into a generous living and dining layout anchored by rich hardwood floors, recessed lighting, and oversized dual-pane windows capturing northern, southern, and western light. The scale of the space lends itself equally well to quiet evenings in and larger gatherings there's no awkward furniture math required. The open kitchen is outfitted with Thermador and Bosch appliances, a dedicated pantry, and storage that actually delivers. The bathrooms continue the material story: Bianco Carrara marble wall and shower tiles, a custom oak vanity with a Carrara marble countertop, and generous storage that keeps the space feeling curated rather than cluttered. The primary bedroom features a proper walk-in closet, and the soaking tub earns its footprint. Residents enjoy access to a private roof deck, playroom, bike room, and individual storage. In-unit washer/dryer, central heating and cooling, and a video intercom round out the day-to-day comforts. 539 4th Street is a boutique low-rise that doesn't announce itself but rewards those who pay attention from the restored facade to the finished details inside 3L. The apartment is move-in ready. Schedule your private showing today.