Overall we enjoyed our stay at Yasemin's place but there were a few issues/disappointments.
Two evenings in a row we had men outside our door ringing our doorbell. When we came to the "peephole" the light in the hallway would be off so we couldn't see them but we could hear them snickering and laughing. The reason I put "peephole" in quotation marks is because the peephole is actually just a large hole in the door. Obviously these were unnerving experiences but what bothered us even more is that both times we contacted Yasemin to let her know about the incidents and she never responded. She also didn't get back to us about several other messages we sent before and during our stay.
Also, Yasemin's sister was the one who had checked us in but unfortunately she doesn't speak English so we couldn't communicate. It was quite awkward and disappointing because we were really looking forward to talking with Yasemin about Istanbul etc.
Then around 8 at night I messaged Yasemin to ask if there were any spare light bulbs in the apartment because the light in the bedroom wasn't working. At 9:20 pm we heard our doorbell and were surprised to find a woman and two men at our door. They had come to fix the light which was super nice, but we really would have liked to have been told in advance that they were stopping by. We definitely felt our privacy was invaded. And strangely- the light went out again the very next day.
Lastly, just be aware the apartment does get really hot since there isn't AC. And the floorboards are very badly in need of being replaced in the hallway that connects the kitchen/bathroom and living room. You have to step over a fairly large section to avoid the broken floorboards.
Anyways, we wish we could have written a more positive review but we felt it was important to be honest about our experience.