Most travelers stay in Khartoum, but you can camp nearby at Mero Tented Camp (www.italtoursudan.com). It's 1 mile (2 km) north, but has a view of the pyramids.
We did the easy hike to the Mesa Arch just after sunrise. This is the perfect time to beat the crowds and the heat, and also get fabulous pictures as the sun is behind the arch.