Fazilet was an amazing host! The flat is just next to the tube station (Sishane-6.Daire exit) which makes everything easier. You'll also be able to get access any touristic attractions/places around the neighbourhood by walking distance. The most famous "Galata Tower" is literally 5 min walk from Fazilet's nicely decorated place.
Bear in mind that the breakfast place called Mangerie with a bosphorus view in Bebek which Fazilet has recommended was also amazing! Don't forget to visit.
So throughly everything was very much thoughtful and neat! I'd highly recommend Fazilet's place to anyone who would like to enjoy Istanbul in a very much welcoming place and the host!