I highly recommend Keiran’a place for a stay in Istanbul, it doesn’t matter it will be short or long term stay - because it’s equally perfect.
The apartment is stylish and well designed, it’s pretty big and comfy for a studio, it’s located just in the perfect spot to explore the city in any direction, there a lots of cafes, restaurants and interesting streets all around. It’s absolutely walking distance to metro, boat station as well as to Taksim square (where does shuttle buses from both airports arrives).
Checkin/checkout both were very simple, Keiran answered all questions very fast, he gave us a lot of local tips and fixed all the problems in just a few minutes.
We really enjoyed our stay, even in the is pandemic times.