The flat is small, modern and nice. We faced several problems during our living - with arrival, wi-fi connection, sound insulation (you can hear every cough from outside), but Mia was very responsive and ready to fix everything, despite a hard time of the pandemic.
The location is good, not far from the centres of life in Istanbul (though it's really tiring to go up the hill in the morning, but the whole of Istanbul is like this). Also, Mia has a guidebook of her favourite places, which can help you a lot.
The ratio of price and quality is really good and I'm sure some of the problems we met will be resolved, so book it without a doubt.