I booked a full-day tour of Memphis, Dahshur, and Saqqara (plus an airport pick-up) with Shereif and it was perfect!  Before my trip, Shereif and I communicated over WhatsApp--he helped plan what I would visit with my 1 day and helped plan the perfect day.  On the day of the trip, he arrived on time with a driver and we made our way to all of the sites I wanted to see--about 7 full hours.  He knew the sites well, had lots of knowledge to share, and was great to get to know.  Shefeif made my 1 day in Cairo perfect--I recommend him to anyone.  He will teach you lots--and you will have great fun with him!