Welcome home to a one of a kind one bedroom condo right in the heart of DC. This unit features a stunning spacious floor plan with almost 1,000 sq/ft of living space! This beautiful property features upgraded kitchen appliances, granite countertops, bar seating, abundance of closets, hardwood floors, and washer/dryer in the unit. The amenities of the building are incredible with its roof top terrace providing breathtaking 360 degree views of DC, swimming pool, gas grills, plenty of seating creating a very relaxing and entertaining environment. The building features a fitness room and a separate community room with plenty of space to work, relax with friends and even play pool. 24 hour desk and concierge service desk. Nestled between K and H Streets, it's easy to see why neighbors love calling the magnificent 400 Mass home. Packed with amenities, residents enjoy a spacious community room, billiards room, fitness center, business center, 24-hour concierge, security, 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 endless dining, retail, and entertainment options nearby. 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.***To help visualize this homes floor plan and to highlight its potential, virtual furnishings may have been added to photos found in this listing.