You don't feel that someone lives there because nobody actually lives there. It's like a long term rental apartment that in best case scenario someone is using as a savings/investment vehicle but on short term. "Worst case" it's part of an apart-hotel.

When I travel as part of a large group(i.e. more than 3 people) a short term apartment is great because we need a big affordable space (i.e. someone may sleep on the couch and we don't want the hotel "greetings & house keeping" experience) but nevertheless I don't want or expect a dirty place in any way, shape or form be it in Cairo or somewhere else. I'm pretty sure there are people living in less than sanitary conditions all over the world including Western Europe and the U.S. That doesn't mean I have interest in experiencing that kind of "living/sleeping".

All that being said I've stopped using Airbnb years ago. It seems a broken system. For short term rentals/apartments Booking.com is the only sane choice(IMHO).