We liked this apartment very much. It is located in a quiet (and it looked like an authentic one where locals live) street close to Istiklal street with restaurants and shops. The apartment has a big comfortable balcony, where you can watch the sunset over the city. Everything is very clean and apartment has everything you need for your staying. The shower works great,no problems with water or anything else. The staff in the main office is very responsive and always ready to help. Staying in this apartment gave us great pleasure. Next time we come to Istanbul we will definitely try to rent this apartment again. Highly recommend.
And steps in the staircase are quite high, but after whole day walking up and down it was a piece of cake ))))).