We had a great time in Istanbul and in this flat! We didn't realise that the flat was over two floors and that there were two bathrooms so that was a great surprise 😀 we went as a family of 6 and there was plenty of space and it didn't feel crowded. One member of our family did struggle a bit with the hills and stairs up to the house but a taxi from Üsküdar Town doesn't cost much if someone isn't fit enough for them.
We would definitely recommend 👍