Welcome to three thousand four hundred twenty 11th Street South, an exceptional Quincy Model townhome built in 2015 in the sought-after Penrose neighborhood of Arlington. Offering over two thousand five hundred square feet across four thoughtfully designed levels, this home features four bedrooms and four and a half bathrooms and blends modern finishes with smart, functional upgrades for today's lifestyle. The main level showcases a gourmet kitchen with upgraded countertops, backsplash, wall oven, and gas cooktop, flowing seamlessly into living and dining areas with hardwood flooring and access to a private deck. The current owners have created a dedicated home office on the entry level, a bedroom with full bathroom, and an exceptional home gym complete with a tonal system, rower, and sauna. Upstairs, the primary suite offers hardwood floors, custom closet storage, and a spa-inspired bathroom with dual vanities and seamless glass shower, along with an additional bedroom, full bathroom, and laundry. The top floor has been thoughtfully configured as an additional private bedroom suite with en suite bathroom and direct access to the rooftop terrace with scenic views. Additional highlights include a mudroom, private patio, and two-car garage with added storage. Perfectly positioned for lifestyle and convenience, enjoy easy access to dining, nightlife, fitness, and daily essentials; it is also a commuter's dream location near The Pentagon, Crystal City,,and Ballston. Flexible,,functional,,and lifestyle-driven—this home truly offers it all. The possibilities are endless.