Here newly-elected archbishops present their credentials to the President on taking office and swearing-in ceremonies for small groups of ministers and other officials take place. It is next to the Visitors' Lounge and was formerly the sitting room of the royal family. In Ziller's original plans the salon was called "the family room". In the last few years it has become known as the Byzantine Salon because of its decoration with Byzantine icons, its furniture and the objects displayed in glass cases.

Two of the icons which adorn its walls are of the Eptanisa School and depict, seated on thrones, Christ and the Virgin Mary holding the infant Jesus, respectively. The icon depicting Saints Constantine and Helen comes from Veroia and the triptych next to the display cases is nineteenth century. In the display cases are silver and gold plated crosses with carved wooden centres, hammered silver thuribles and sprinklers with inlaid decoration. The icons, as well as the marvellous examples of the skill of eighteenth and nineteenth century silversmiths, are on loan from the Byzantine Museum, the National Gallery and the Benaki Museum.

Most of the furniture in this room is 19th century and comes from Istanbul, reproductions of Byzantine furniture similar to that depicted in the small portable icons and the religious paintings of the period.