The location in Kadiköy and the views are amazing! Kadiköy is an outstanding place for tourists to visit. The shops and eateries and vibe are off-the-charts awesome. Don't miss the park on the Bosphorus at sunset.
If you feel like you need a host, verify that they will be there. I didn't meet Uraz, but they sound like super-cool peeps with a lot going on. There were other guests coming and going -- it had the feel of a hostel, which can be great if that's what your're going for.
If you have lots of luggage, know that you will carry it up six flights of stairs. I was super pleased that I had stored my big bag at the AirBnB from the previous night. I could not have managed it up six flights. But thanks to my fantastic AirBnB host, Abdullah, in Beşiktaş, (⭐⭐⭐⭐⭐), I didn't have to worry about that big bag.