The seraglio. The sultan and the sultana retire for the evening, and Don Juan, still dressed as the woman "Juanna" is taken to the crowded harem, where the odalisques reside. Juanna must share a couch with Dudù, a pretty, seventeen-year-old-girl young. When asked his name, Don Juan calls himself "Juanna". The narrator tells that Dudù is a "kind of sleepy Venus . . . very fit to murder sleep. . . . Her talents were of the more silent class . . . pensive. . . ." Dudù gives Juanna a chaste kiss and undresses.