I had an exceptional time in Istanbul, even for only a few hours. I had an overnight layover and found Alihan's B&B here on Airbnb. Everything went very smooth, from my driver picking me up to check-in, to how close it is to markets and sights such as the Hagia Sophia. The room was clean and neat, the staff very friendly and helpful.
I highly recommend a stay here if you decide to visit Istanbul.