I have posted a review of the LM Pyramids and Heliolopis, similar to the reviews here.

You might also consider the IC CityStars. They upgraded me (RA on a cheap rate) to a really tasteful two-room suite, with a beautiful bathroom and tons of amenities (the thickest towels and robes I have ever seen, local Red Sea bath amenities, lots of free food) and good service all around. Plus it's at the CityStars mall, which is reminiscent of Dubai's malls. Not that you're going to Egypt for that, but for one there on business it's nice to have. The location is not too central, however. But in terms of pure quality of the hotel, it's probably the best on this list (I am basing this on what colleagues have told me about the Semiramis).