This is a BUSINESS (the Hotel Yakut), not a private listing.
It is VERY difficult to find.
Room 108 doesn't have a window!
Furniture is basic but comfortable. Bed is a bit saggy but I slept well.
Boiler is broken and only works intermittently - Mehmet says he is going to fix it...
You are directly above the Saray Restaurant so you'd better like Turkish music. It wasn't a problem for me.
Mehmet is very helpful at fixing problems but the problems shouldn't really exist in the first place.
The Hotel is in a great area - very authentically Turkish but convenient for iconic sites.
Note: the nearest tram - Sultanahmet - is a good 15-20min walk, mostly uphill.
Take the "5 mins to the Blue Mosque" with a pinch of salt - it's all uphill and takes about 10mins if you're really fit. Which I'm not.
Overall, this all sounds a bit negative. Most of these things didn't matter too much to me and I still had a good time.