The Sabil (سبيل) room at Bayt Al-Kritliyya, known as the Gayer-Anderson Museum, is a rare example of a public water dispensary attached to a private home rather than a mosque. The room features original stone masonry walls, a large ceramic storage jar, carved wooden furnishings, and arched windows with orange-tinted wooden shutters, all characteristic of Mamluk-era domestic Islamic architecture. Beneath the Sabil lies a large underground cistern from which water was drawn and distributed through two iron-barred windows to the public — a system of charitable water provision common in medieval Islamic Cairo, located in the Ibn Tulun district of Sayeda Zeinab.