When I was in Cairo in February 2015 I visited the Historical Cairo. Both the Islamic and Coptic part. The Islamic takes a day to see all for sure, the Coptic you not need a full day. It for sure was quiet everywhere, not many tourist. I like both places. Different religions mixed in a city does work as you can see here. Everything was in good state and easy to visit. We did have a guide to keep the touts away but on general we had no problems with touts. Did not get ripped off, did not get food "problems". I can recommend really everyone to visit Cairo, also now, it's perfectly safe to go! I used a guide from Egyptian Sidekicks; they are students and do not ask for tips and extra money. All fair and perfect service!