Mohammed is a wealth of knowledge. It gets a bit overwhelming sometimes. He was enthusiastic, friendly and did a good job. There are some things i wanted to mention. I came as a solo female. There were some comments made where i felt uncomfortable. There was a certain point in the tour where i asked is this "screen" normal nowadays as women hiding behind so they can't be seen. "He indicated not so much but it is traditional. For example, if you were my wife and my friend came over. I would not want him seeing my wife." Comments like this just made me feel weird. Additionally, i have many friends in cairo that informed me of the standard tip based system with guruwalk. All throughout europe i have used guruwalk and often tip 5-10 euros and never been a problem. I asked friends what is normal and they indicated for a good tour 50-150 egp if really good you can give 200 egp. But not for something like a museum as it is only knowledge based. Not like he is providing me a service. Things like luxor, abu simbel temples those things are normal for this kind of tip. I gave him 140egp tip after pushing and he indicated this is very little and wanted money in dollars. He then requested 25 euros for a tip. Never have i paid so much in guruwalk for a ONE museum tour. He then continued with haggling and indicated his ticket cost his uber cost and more. I'm not here to cover your uber or extra charges to get here. If you would like to be covered for all this he needs to work for an official tour company. Viator, get your guide etc all have official tours people pay $30+ for , not a company that budget travelers use for free tours. I felt pushed. 140egp is a great tip still. I didn't like our encounter. As a solo female i do not encourage him. Just keep this in mind based on how many people you come with. Nontheless of our encounter, hagglinf and cheating is common in egypt. Proceed with caution. He is a wealth of knowledge despite this all.