In the guard room mentiuoned earlier, at the east end of the Courtyard of the Black Eunuchs. From that room several corridors lead further into the Harem, or to an exit at the Gate of the Aviary.
In 2018 there were so many restorations going on I lost track for part of the tour. So rather than making a virtual tour I add pictures from earlier visits, mixed with fresh ones, from here.
In the room there is a huge mirror, 18th century.