Perfect spot for us to base ourselves while in Istanbul. Alaaddin is a gracious host. The apartment had everything we needed and was incredibly clean and comfortable. It is also in a very, very convenient location.
I echo another reviewer who mentioned the men loitering in the street outside of the apartment/cafe. When Alaaddin is there and the cafe is open, there are very few men outside. When it is closed and Alaaddin is not there, there were a lot of men loitering. The area appears to have prostitutes on either side of the apartment and cafe. This did not bother us but if this is of concern to you, be aware. We felt safe, though we were a couple. If I were alone, I may not have felt as secure at night.
I recommend this apartment if it looks like it will meet your needs. Again, Alaaddin is a great host. As an Airbnb host myself, I can say that Alaaddin went gone above and beyond for us.