I’ve stayed in more than a few places and this is the best in Istanbul in my opinion.
Centre of Kadıköy, flat in a historical Italian building, high ceilings, large rooms, big living room table, excellent light with large windows, comfortable bed, large kitchen for everyday cooking, yoga mat, bluetooth speakers and a piano.
In short, everything you need to feel like you’re at home here in Istanbul. The owners are very kind and accommodating.
Book if available. Excellent