Al-Sahaby Lane is a good, while touristy, Egyptian restaurant right in the middle of Luxor, very close to the Luxor tourist souk and within walking distance of the river cruise port and the Temple of Luxor. Al-Sahaby Lane is located on the roof of the Nefertiti Hotel (there are many steps and I did not see an elevator). Reservations are not required and the restaurant is most certainly casual.
Entrance to Al Sah-aby Lane from the street.