Berna's sweet, cozy flat is in a perfect location. She is professional and makes it easy to get settled in. She even set out a crib for my baby boy, which was very helpful. I'm a bit biased with so many family & personal ties to Cihangir but I think it's the best part of Istanbul － so much history, art, architecture, interesting characters, culture, lovely views and unique places to eat, shop and peruse.
Berna was always quick to reply if a question arose. Everything was pretty straight-forward. The refrigerator is huge, so it's perfect if you plan to do your own food prep. There are so many things within walking distance, so you can easily re-stock.
Check out the vintage shop across the street, Madam Mare, and the books/music shop a few blocks away called Opus 3A. This area is very hilly and does require some walking. If you have mobility issues, you will have to take that into consideration, also the stairs leading up to the flat are super steep, a narrow winding staircase, so if you are jarred by heights, keep this in mind. I'm sensitive to such things so it took a few trips up and down, slowly, to get used to it. If you prefer, she also has a flat available with elevator.