Clean and cozy apartment, it is not big but has enough space and all the appliances you might need. We had to buy salt and cooking oil but it was not a big deal.
Apartment is on the third floor and there is no elevator, but we could safely leave the stroller downstairs.
There is a small market downstairs which will have all the basics (they do not accept international cards, so have some cash with you) and a tiny diner with delicious and affordable food.
The metro station is 6 min walk from the apartment, and the neighbourhood seems safe in general (there are slums nearby and we had to walk though them a few times, also nothing happened).
We visited during the central heating season, and we had to keep the windows open at all times. I would say it is quite quiet outside compared to other areas of Istanbul. There was a wild cat in our bedroom though :)
Special thanks to the host. Our stay with Tahir started with a small misunderstanding: we asked for a baby bed in advance for our 1,5 year-old but found a small new-born crib in the apartment. We asked Tahir to help us find a travel bed, and he arranged it for us the next day. It was a life saver which allowed us to spend some restful evenings in the leaving room instead of watching over the rolling baby.