My wife and I recently went on a two-day private tour to Cairo and Luxor. Everything was organized perfectly: personal guide, comfortable car, sleeping train with dinner and breakfast.
On the first day visited the pyramids of Giza, the Sphinx and the Egyptian Museum. The wife was absolutely thrilled with the scale and the antiquity. On the second day of Luxor: Valley of Kings, Hatshepsut Temple and Karnak Temple. She was particularly struck by Karnak's 134 columns.
My wife, who has travelled extensively, said it was the best tour in Egypt. It went comfortably, without fatigue. Highly recommended!