Truly the best way to see Egypt's incredible sites, and I think the best cruise option.
My mom and I are frequent backpackers through different countries around the world, and I loved this cruise because:
(1) pacing. You get to see SO many places. Stunned that the description on Viator actually undersells the package when you get the tours included. Philae island, Komumbo, Edfu, Luxor temple, Karnak temple, and Valley of the Kings. For my mom and I, this was the right balance - we want to see the main sites but don't need to see every single one. Visiting all of these sites in 3 days can be tiring at points, but at the same time, my mom and I didn't want to be on the boat for much longer (food starts to get the same, temples start blending together, diminishing returns).
(2) our guide Mohammed Shakour was FANTASTIC, and I believe made the experience the best. He's got all the traits you would expect from a good tour guide: good English, friendly w us, knowledgeable in the history and facts. Shakour separates himself from other tour guides in that he loves to share his knowledge more than any other tour guide. At some temples, he would take us to parts that I noticed other guides were not taking them, and he was explaining individual hieroglyphics and Egyptian stories also unlike other tour guides I saw there. His knowledge base is expansive and he is enthusiastic to share. He also rearranged part of our itinerary to help my mom and I. He was also very honest when it came to tourist advice (ie. I would ask him about where to buy certain souvenirs, who to avoid, never putting pressure on us to buy things in the shops that the tours are sorta required to take you to). If i did a tour through Egypt again, i would ask for Mohammed Shakour again.
(3) the boat is nice enough. It's not an American 5 star boat. But the accommodations have the necessities - clean bathroom, comfortable bed, refrigerator. The food I found simple but tasty. DO bring your own water. I brought ~9 liters of water onto the boat which lasted my mom and I for the entire trip. They sell water on the boat but it's rather expensive.
(4) finally, I'll say going from Aswan to Luxor was great. Since you're going w the Nile River current, i thought the boat was very smooth. Also, i think the sites get better from Aswan towards Luxor (this, the excitement builds each day)