I didn't end up staying at the specific property I booked with Kamil (Sultan's Inn) as Kamil was accommodating and allowed me to check in earlier at one of his other properties (Naz Wooden House)
Both properties were very conveniently located in Sultanahmet, close to all of Istanbul's old town sights and tram stop. The room, while small, was also very clean and comfortable with strong WiFi.
Free breakfast was served on the top floor, with a good spread and a great view to both the Sea and Blue Mosque.
Would stay again.