Amazing value for Istanbul! Walking distance to Taksim Square, where it is literally 24/7 (I got a haircut at 2am) but removed enough from the noise. 4th floor walkup, but the views and breeze are worth it! The apartment is bright, incredibly clean, and has enough amenities for the most comfortable stays.
Ubeydullah is incredibly responsive and communicative, friendly, and warm - he brought us a delicious gift for us to enjoy as a thank you. Regardless of the time of day, he was able to fix a minor issue within an hour, and get us a transport service a few hours before departure (we had 4 big luggages), as well as offer to get a dinner reservation for us a few hours before we arrived.
All in all, I would not hesitate to stay here again over any hotel in the area - Ubeydullah made sure of that, and he will be my go to person when I come back to Istanbul!