Old building and hence old and run down apartment, but very good location in Fatih, shops aplenty left and right, up and down, just make sure you have liras on you if you're going to any smaller shops (exchange money around Taksim for best rates).
Liked the joint roof top terrace for our morning coffee. LOVED the turkish coffee of course. Comfortable bed and pillows, solid heating, not very fast wifi but still stable signal, mind you very basic kitchen and toilet utensils.
10min walk to Sultanahmet, good connection across the bridge using T1 tram. Make sure you buy the Istanbul Card from a kiosk and THEN top it off at the *mostly horrible* yellow machines next to stations, don't waste hours of your life trying to get a sane response from tourist info offices like we unfortunately did.
We mostly communicated with Vefa, who was beyond friendly and forthcoming which we greatly appreciate. Gave us a nice map, an extra key, plenty of advice on what to see, booked a taxi for us and was in general very quick to respond to any of our requests.
If you're looking for a good experience with nice hosts on a budget, you will like this place. Thank you again Vefa and Mehmet, wishing you the best and thank you for having us. :)