We stayed here for 3 nights with my family and had an awesome time. The apartment was very clean, everything was functioning well (washing machine, microwave, refrigerator etc) check-in went smooth and we hardly had any problems. The host even helped us with operating the washing machine as everything was in Turkish language!
One issue we faced was that the internet was not working when we arrived but the host was kind enough to get it resolved within a few hours.
As far as location, this was our first time travelling to Istanbul so we were not really sure of the areas and booked this cute little apartment based on the aesthetics and it being close to one of the most happening places in Istanbul. We felt this area itself was very crowded and can get loud, especially at night. So if you are someone who is looking for a quiet place then this place is not for you.
Worth mentioning is that this apartment is on the second floor which is not really a problem and is very easy to get to. Only problem is when you walk the steep hills of Istanbul and come back after long walks then this can feel a bit troublesome.