The host was very helpful and this apartment is in a great location! Just a few minutes walk from Hagia Sophia and tons of restaurants. The host helped me arrange airport transpiration for a good price and was flexible with payment.
One word of caution to other travelers is that as a solo female traveler, I did not feel very safe in Istanbul. I was harassed by a number of men in the area when out at night, despite being in a well-lit area. I strongly recommend traveling with a friend or in a group, especially in the evening!