In 1864, Baha'u'llah and his entourage had rented a mansion, It had thirty inner, private rooms on three storeys.

By August, 1864, Baha'u'llah and his entourage had rented a mansion, called the house of Amru'llah, near the Sultan Selim mosque at the center of the city. It had thirty inner, private rooms on three storeys. The public portion of the house had four or five reception salons, as well as many bedrooms. Baha'u'llah and his family lived on the upper floor of the private half of the house.

- Juan Cole

https://web.archive.org/web/20160517145913/http://www.h-net.org/~bahai/trans/vol6/surall.htm