Great place to stay.
Perfect location - away from touristic hustle of the old town, but at the same time you have 5 min walk to the Istiklal, metro and ferry station at the same time! Quiet street. Have two rooms with two full beds, nice and cozy living room, kitchen with everything you need. Has heating (rare thing in Istanbul)!
Good internet - was living and working here for three weeks, not a glitch during conference and video calls. And of course best of all - Berlin. Berlin is sweet and gentle cat, not a bother at all. Would miss her!
For sure would stay here again if would visit Istanbul again. Highly recommend!