Our trip to Istanbul was perfect. The flat was very clean and comfortable and new, just like in the photos, and everything worked. Isil came to meet us and was really helpful. We even went to a local cafe together (so cheap!) and looked around the area a little. She explained all about public transport and gave us electronic cards. Sultanahmet and all the main tourist sites are close and easy to get to.
The area itself is like it says in the description, very photogenic, old-fashioned, a great base for exploring Istanbul. It was great to actually stay in the Old City, so close to the Golden Horn. We would definitely come back. Recommended.