Deniz helped me with my check-in and check out a lot and I am very thankful of that. The apartment is in a wonderful and safe location next to the main high street of Nisantasi (expect some noise until midnight at night from taxis and cars). There were some issues with the apartment which are listed below. A lot of cool shops, cafes and restaurants near by and you can get to most places via taxi within 25 mins.
The apartment itself is not as brand new as the pictures suggest. Cracks are visible on the wall specially in the kitchen and lounge area. Some of the lights do not work (specially in the lounge). Cleanliness was not 100%, towels were quite old and dirty. There were visible marks on the bed linen and duvet covers. Big sofa in the lounge area was different to the one shown in the picture on the listing. Table top in the lounge area had dirt marks on it.
Taking a shower was a bit tricky as the water will fluctuate between extremely hot water to extremely cold water in all the bathrooms. We had to keep jumping in an out to take a shower.
Internet speed is not the fastest and it kept disconnecting. Connectivity also does not reach the far room.
I would strongly suggest that the pictures on the airbnb listing are updated.