I stayed for 10 days during my first tourist visit to Istanbul. I was very surprised by the cleanliness and coziness of this place, it's really much better than on the pictures. Kitchen is super well equipped, heating works very good (i stayed in december). Theresa is super attentive and always answered my questions fast. But i can say that if you are a tourist this flat can be a bit far from all touristy things - you have to walk a lot, and take marmaray or boat to the other side, which takes a lot of time. But you have an opportunity to experience real life in Istanbul - there is an excellent local food market nearby, and the prices in shops are much cheaper then in a city center.