Feel the urban vibe at AC Hotel by Marriott National Harbor Washington, DC Area, a hotel in Washington, D.C.'s National Harbor. Experience this design-led hotel that effortlessly blends contemporary style with cosmopolitan sophistication. Unwind in the distinctive waterfront setting of National Harbor. Relax in one of 192 sleek guest rooms. Indulge in our innovative beverage and food offerings served in the center of the hotel experience - the AC Lounge. Enjoy a fresh European-influenced breakfast in the morning and a hip bar serving great cocktails and globally inspired small plates in the evening. Meeting spaces provide 3,700 square feet of space, integrated technologies, collaborative layouts and ergonomic seating. Plus, we offer unique outdoor event venues, some overlooking the Potomac River. AC Hotel by Marriott National Harbor Washington, DC Area is situated on the Potomac River, just minutes from Washington, DC and Alexandria, VA.