I would like to say just one thing to Mehmet and to his colleague Elvin: THANK YOU.
Me and my parents went to Istanbul for the very firs time in October. And it was also the very first time for us of using Airbnb, so we were a little bit worried (especially, me) about how it works and if everything will be fine. Mehmet and Elvin were super helpful and available day and night, they organised for us transfer from and to 2 different airports, met us near the apartment, helped us with every request that we had, from buying a sim card to giving us the transport card (Istanbul card) that simplified a lot our permanence in the city with no worries and helped us to see a lot of places.
The apartment is just like on the photos with a really big bedrooms and very comfortable beds. Hot water, cold water, internet - everything what you need is there and fully functioning. Also, other very important thing, is that it is very quiet inside the apartment, so you don't here all the noise from the street and can sleep well. The apartment has been cleaned every day, with towel changing and so on, just like in the hotel.
The district where the apartment is situated seems very local with supermarkets and good places to eat or drink a tea, but at the same time it is near to the major sightseeings, like a Grand Bazaar (7 minutes of walking), Hagia Sofia and Blue Mosque (20 minutes of walking). The tram is 5 minutes of walking and it can bring you to Bosporus in less then 10 minutes and to Karaköy district in less then 15 minutes.
Mehmet, thank you very much once again! Next time we will definitely stay again at your apartment! :)