Dogan’s place was great for a short stay, in a central location in Sultanahmet - very close to the Blue Mosque and the Hagia Sophia. However, the place is small, so I think it would be difficult to cook meals or stay for an extended period.
We felt very safe and comfortable during our stay, but it is not on the most visually appealing street - there is certainly an abandoned building a few doors up and it is on a rather steep hill. We had a few difficulties directing our taxi drivers to/from the location.
We definitely can recommend Hanzade Terrace Restaurant very closeby - beautiful food and super friendly staff!