Overall stay was fine, 4/5
Apartment is nice and clean, the view to the sea and Kadikoy is also very nice. As its new airbnb, it lacks some stuff, like bedsheets of the proper size, I don't know what's the problem to buy them, its 20$, but sleeping experience would be much better.
Location is relatively new, close living buildings are under construction. But pharmacy and some coffee shops are there. However, we preferred delivery, it was much better. Pool is open and does not work in winter. Gym is fine, sauna and hamam did not work when we were staying :(
Overall price is a bit too much for what you get, 65$/day is definitely too much, taking into account service fee and the fact that house amenities were not working.