Washington Shopping: 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. These are tony, big-name places, and include Waterworks, Thos. Moser Cabinetmakers, Baker Furniture, and European outposts, such as the high-concept designs of Ligne Roset and the hip kitchen furnishings of Bulthaup.