We had a good stay for just over a week at the number 10 flat. The mirror in front of the bed just instantly gave away the 5 stars from my side :))
The location is a bit tricky tho. It’s near sisli which is a very good neighborhood but this specific part is more local and old. The streets are very very thin and on the steepest hills that mankind has ever built anything. You can barely find a parking spot. It’s somewhat noisy because of the type of alleys and houses.
Inside the flat was great just like the pictures. Neat with good amenities in the kitchen. We arrived 2 in the morning and the check-in was automatic which was convenient. All in all, good but if you plan to go there with rental car the asian part of Istanbul has better streets and is less crowded.