We really loved Murat's place. It's exactly the same as pictures and maybe even better. The view from the patio is great for morning coffee, the kitchen had everything we needed for cooking. The bed was big and comfortable, bedroom had lots of storage space for clothes. The owners live downstairs and they have social gatherings especially on weekend nights on their garden downstairs so keep that in mind. Adem was very helpful, we were able to reach him anytime and made our stay easy. We walked to the water everyday, it takes about 15 minutes and Bebek/Arnavutköy area is perfect if you want to stay away from touristy places and enjoy the bosphorus view.
Overall it was a good stay and we would like to stay here again the next time we're in Istanbul. We happily recommend Murat's place.