A MASTERFULLY DESIGNED PENTHOUSE IN THE HEART OF OLD SAN JUAN. Experience the Historic District of Old San Juan from this impeccably renovated, exquisitely styled penthouse at Reina de Castilla Condominium. This rare single-level residence offers unparalleled views of San Cristobal Fort, San Juan Harbor, and the turquoise waters beyond. Its prime location places you just a short stroll away from gourmet dining, charming boutiques, and the city's vibrant nightlife. Designed with an intentional flow, every room offers seamless access to an east-facing balcony, ensuring both abundant light and a constant connection to the surrounding landscape. The main living and dining area, adorned with upscale furnishings and bespoke artwork, extends to an enclosed balcony with counter-height seating, allowing residents to take in the breathtaking harbor views. The grand primary suite boasts a custom walk-in closet and a spa-like ensuite bathroom with a double vanity, full-sized shower, and a freestanding soaking tub. The designer kitchen is a statement in itself, featuring sleek black granite countertops, NEFF luxury cabinetry, a brand-new Sub-Zero refrigerator, and a ducted downdraft cooktop. An open-concept layout connects the kitchen to an inviting family room, convertible to a third bedroom, where double doors lead to a private terrace. Every inch of this single-level penthouse has been meticulously designed for both elegance and functionality. Expertly laid travertine floors provide a timeless foundation, while custom Poliform furniture ensures smart storage solutions. Thoughtful upgrades include individual mini-split A/C units in the bedrooms and family room, a central A/C system in the main living areas, and double-paned, stormproof windows and doors. Reina de Castilla features a full power backup generator, water reserves, high-speed internet accessibility, and 24-hour security. A rarity in Old San Juan, the residence also includes three deeded, covered parking spaces. Combining the romance of a historic setting with the ease of modern amenities, this penthouse promises a lifestyle defined by beauty, culture, and convenience.