This is a really nice play to stay for two people – spacious and stylish. It has a great location with the main shopping road literally two minutes away and many other smaller shops/restaurants nearby (we recommend the falafel place). The tram line (T1) that takes you to Sultanahmet is also very close, just down the road/hill.
Kürşad is very fast at responding, not only before your arrival, but during your stay as well (we ran out of toilet paper towards the end of our stay and Kürşad quickly arranged for more). He welcomed us, when we got to the flat and gave us some directions and tips for how to get around Istanbul. Everything was very clean and just as we expected it. We also took advantage of the airport transfer offered, which was great – it took so much stress out of arriving/leaving!
All in all, everything was great and we couldn't recommend Kürşad's place more! :)