Staff members where pretty polite, we had a great experience, location was perfect, close to bus stops 5 min walking, probably 8-10 minutes walking to İstiklal St. (shops, restaurants) 15 mins walking distance to Galata tower (you should try the Sebastian cheesecake) and I will say 15 min walking distance to the tram. The neighborhood is peaceful and everyone around there pretty nice and polite.
About the apartment, we stayed on the third floor (just get ready for the stairs) we have a little issue with hot water and heating system, but took them less than 10 minutes to fixed.
As a recommendation whenever you are in Istanbul try to go local, if you go to touristic places take buses and trams, pretty easy to move around.
If I go back to Istanbul, I will definitely book with you guys!
Thanks to the staff members for all your efforts and your great communication!