Great apartment. Very comfortable. View is wonderful. See the Bosphorus from living room, Galata tower from bedroom. Location can't be beat - 10 minutes or less walk to Taksim, Istiklal, or the T1. Quiet area with many cafes nearby. Grocery steps away. Has an elevator, which makes coming and going easy, although be aware that the elevator is small and opens to a spiral staircase, so be careful getting in/out. Good wifi. Apartment could use a little maintenance, but the bones are good. Lots of windows (all new and very nice windows) and good fresh air flow through apartment. We'll definitely try to stay here again if passing through Istanbul.
The host Ilker is great - quick/easy communications, easy check-in and check out. Recommended.