Stunning 1BR/1BA upper-level contemporary condo in highly sought-after 400 Mass Condominium in vibrant Mount Vernon Square. The bright, open space has offers rich hardwood flooring, modern lighting, elegant moldings, and a designer color scheme. Prepare delightful meals with ease in your spacious kitchen featuring stainless steel appliances, granite countertops, and ample storage and counter spaces. Unwind in the tranquil bedroom with generous custom closet with laundry. Nestled between K and H Streets, it is easy to see why neighbors love calling magnificent 400 Mass home. Packed with amenities, residents enjoy a spacious community room, billiards room, fitness center, business center, security, 24/7 front desk and more. The fabulous rooftop terrace with gas grills, swimming pool, and sweeping views of the city will be a favorite spot to unwind. Everything you need is at your doorstep with a 24-hour CVS right downstairs along with endless dining, retail, and entertainment options. Commuting around or out of the city will be a breeze with metrobus outside, I-395 one block away, and Gallery Place, Judiciary Square and Mt. Vernon Square metros all only three blocks away. Condo fee includes free FIOS internet. Rental garage parking available.