Convenient check-in (since Zalal really lives really close), late checkout if not booked. Great location 5 minutes from Taksim with an amazing kumpir place and 24/7 grocery store on the opposite half of the street. 15 minutes to reach the ferry station that will take you to the Anatolian side or the Princes' Islands. Great view of the Bosphorus.
The place was as described, including a shower cabin and adjustable heating. Decent toiletries and a welcome fruit basket were a nice touch. All beds are quite firm. Walking to the top floor with no elevator is fine apart from the couple of times you will do that with your suitcase(s).
I was exploring my options about 1 month before the trip, and this was comfortably better than most. You couldn't go much cheaper in this area even if you opted for a hotel room.