The apartment was exactly how it looks on photos- modern, bright, clean and comfortable. It has everything you need - kitchen, stove, washing machine, dish washing machine and all utensils. I really appreciate good internet connection (as it was important for my work) and AC :)
Location can not be better - very central, yet away from the crowded noisy streets. Few min walk from Galata port (a bit of posh place by the sea) and atmospheric Kadıköy area, where you can find small cute restaurants and shops. It is also a few min to tram station, which will bring you Sultanahmet area. Taxim square is 5-7 min away and from it has best connection to all public transport (please keep in your mind that you will need to go uphill :)
Also, it is a very safe area (it was important for me, as for single traveler).
A few words about host. He was available to help, advice and simply answer any questions. Very caring, responsible and trustworthy host. He also was flexible with check-out and let me stay a few extra hours. Check-in was very easy and you get very details instructions.
I have stayed in a few places in Istanbul, but this place is one of the best places i have been able to find. I highly recommend this place to stay (whether you are travelling alone or with company).
Huge thanks to the host for allowing me to stay in the apartment.