The Lucy Mercer Bar occupies the second floor of Minetta Tavern Restaurant in Union Market District, creating an exclusive, hidden cocktail lounge separated from the acclaimed tavern below. The decor draws heavily from 18th-century French aesthetics with plush velvet seating, elegant light fixtures, and visually stunning design that sharply contrasts the 20th-century American tavern atmosphere downstairs. Named after Franklin D. Roosevelt's mistress, the bar functions as a modern-day speakeasy with a strict no-photos policy that encourages presence and conversation. The indulgent menu features perfectly balanced finger foods, small plates, cocktails, and French wines, with bartenders demonstrating dedicated craft in mixology. The space consistently ranks among DC's finest spots for elevated cocktails and speakeasy ambiance, making it a destination for those seeking prohibition-era style with contemporary sophistication.