It is an excellent way to experience local Istanbul life. It is a busy, lively area, very hilly, and convenient to get around. The host is an incredibly kind and soulful, sincere person. I felt at home. I felt welcomed. There were no problems or issues throughout my stay.
The shower was hot and powerful. I could do the laundry. Sleeping was good except for being unable to open a window - the neighbors do smoke and the smoke comes in the window. Being a non-smoker, I couldn't tolerate it.
The apartment wasn't hot in August. It was pretty cool actually and cold in the nighttime.
To walk to the metro (Osmanbey station) you will need to climb up the hill. It is something. I did a lot of hiking during the stay, at least it felt like it. It was a good experience, different from how I used to go around normally.
It was a great stay.