Very nice apartment in a very nice location, very short distances to pubs and restaurants, you are only 1 hour walking distance away from the eminönü district, which is also very neat. Ismail is very responsive and always answers very fast, which is also very helpful!
The balcony is very sweet, bedroom is sufficiently spaced and you have everything you would need in an AirBnB.
Only 2 things i would mention:
The ceiling of the rooms is very low, especially in the bath- and bedroom.
And be aware of the stairs, after couple days we got the hang of it but they are very steep, not evenly placed and vary in height, which makes it somewhat adventurous, especially during nights.