Both my wife and I really enjoyed our stay. It was walking distance to the metro and funicular, and had many nearby cafes, eateries, grocery stores, and the main attraction (Galata Tower).
The kitchen was complete with amenities which we very happy to cook our own meals during our stay. The units is very clean and very well maintained.
Host was very responsive and was very helpful in answering questions.
Something to consider is the unit is located on the 4th floor with no elevator facilities. We found it a challenge to transport our luggage along a narrow spiral staircase.