We enjoyed our stay at Olcay greatly, and she is a perfect host! I definitely recommend stying at her place. The flat has everything needed, and Olcay also offered to use the products (oil, tea, spices, etc) she had in the flat, so it's a great convenience that we did not have to buy all these things for our short stay. The location is gorgeous and very convenient. It was quite noisy sometimes, however, I suppose that it's a common feature for all central Istambul locations.