We had a very nice stay at Melis' apartment. The apartment is as shown I. The pictures, so we weren't disappointed. It was clean and well maintained. Melissa had left us some snacks for our arrival. We didn't meet her during our stay, but her cleaning lady let us in and I was able to contact her throughout our stay.
Her flat is located in a great little artistic neighbourhood with great cafes and shops. There were also some more touristic streets a couple minutes away and the Galata Tower was five minutes away. My friends and I enjoy walking, so we walked a good 30 minutes or so to most attractions (Blue Mosque, Hagia Sophia, the Bazaar), but you can easily get the tram near the apartment.
You'll love staying at Melis'. Many thanks!