The best thing about this listing is hands down the host, Basma! She is a real joy: a smiling, open-hearted, wonderful person. I had a great time staying with her. We ordered Turkish food, made a nice meal one night, and she was full of tips and advice on things to do and places to go.
The location is nice because it's a bit further from the downtown bustle but is right next to the tram AND the metro, so with the Istanbulkart (she even has one that she'll lend to guests) you can get on all the public transportation for really cheap - like less than US$1 per ride and easily get anywhere in the city. Anyone who likes a nice walk too can just walk to the blue mosque area in like 30 minutes.
I would highly recommend her place to anyone!