This apartment is the perfect base for exploring Istanbul! It was clean and comfortable, and the view was absolutely amazing - waking up in the morning to the sunrise over the Bosphorus is a great way to start the day! The bed was comfortable, and no loud noise at night. Ali was an excellent host, check in was quick and simple, and he was very responsive to all our communications.
Regarding directions If you are taking the metro from the airport - make sure you look for the Istikal Cadessi exit as soon as you get off the train (don't just pick any exit!). It is a straightforward walk down the hill if you get the right one:)