Cady's Alley refers not to a single store, but to the southwest pocket of Georgetown, where about 20 stores reside, in and around said alley, which dangles south of M Street. Look for tony, big-name places, like Waterworks, Thos. Moser Cabinetmakers, and Baker Furniture; European outposts, like the hip kitchen furnishings of Bulthaup; and high-concept design stores, like Contemporaria.