Luxor is located in Upper Egypt, about 10-12 hours by train south of Cairo. The Nile divides Luxor into two parts- the east bank and the west bank. The East bank is the main city, with train and bus stations, airport, market, pharmacies etc. Most of the ancient monuments are on the west bank. Both banks have loads of hotels.
Amun el-Gezira is located on the west bank of Luxor in the village Bairat El Gezira. Take the public ferry from the east bank, and then a twisty walk through the village. There are signs for the hotel, or you can ask people.