We totally recommend Basma's place !
For our first airbnb experience we were delighted to stay at her home. First of all, her kindness is outstanding, she picked us at the Metro station before she offered some fresh drinks to us. But not in some "usage" way, as if she had to, but in some real pleasant and sincere way :) We felt welcome at her home, and she gave us all informations and help we needed ! We went there durind ramadan time, she introduced us to some friends and we shared a lot of great moments and evenings.
The room itself was clean, the matress was very comfortable. The bathroom was ok. For the cons, they aren't that many, the room was a bit small, the building isn't in a good shape. You have to walk for a while to get to Sultanhamet (Blue Mosquee & AyaSophia), by the way the best option is to get there with the tramway wich is very close to the appartment. But over all, you will not find any place that much close and cheap to the monuments as Basma's place !! So we just have to say to others airbnbers : GO FOR IT !