Ali's place was very lovely. Since it's in Sultanahmet, it was east to get to the major sightseeing destinations - I stayed in Sisli on the other Istanbul leg of my trip, and the traffic getting to and from Sultanahmet was insane. If you're planning to seeing the old part of the city and visiting the major sightseeing destinations, this is the perfect location for you. Ali and Phyllis were lovely and very helpful with everything we needed, and the room itself was clean and comfortable.
I will note that the bathroom was a tad bit small, and maneuvering within it was a challenge. We found it okay, but if you're someone who enjoys long showers, it's something to think about. Similarly, the room is perfect is you're looking for somewhere to rest your feet and are spending much of the day outside, but if you've got a day of work and plan on spending it inside, or just don't feel like going out one day, it can get a bit stuffy.
That said, we loved it, and it's definitely somewhere I'd stay at again in the future!