As a frequent traveler to Istanbul, I can honestly say that the architecture of this place is rare to find in Istanbul. The apartment is Beautiful! the rooms are perfect! Everything is very comfortable and up to latest standards.
This place will be my go to place every time I visit, its location is close to everything.
The only downside is that you will find it hard to take a taxi inside kadikoy to the apartment because its too close to everything to the extent where the taxi driver wont find it feasible to take you and would rather take someone to a further destination with a higher rate.
Nadia is supper! she is supportive but at the same time makes sure you will have your privacy.
All in all, this place is super recomended!