a bohemian (parisienne) stay in the very heart of istanbul with a super attentive host.. I don't think you can actually experience istanbul in any other location. Furniture was not a 5 star high end luxury type (due to a bit aged mid-range furniture), however all the content (heating, hot water, netflix, tv, youtube, comfy bed, comfy sofa, secure apartment, etc.) was there hence I didn't feel the absence/lack of anything at all. I also am the kind of person who seeks experience rather than the age and class of furnitire, hence it fit me perfectly.
large windows bring a vibrant energy into the apartment. bed was suitable for 1.5 person but 2 can fit as well. Sofa was very comfy. TV setup was great, much better than any luxurious stays, there was even a small sound system as well so you can hear the bass for movie/music experience. the layout of the flat was very practical, very close to the "cozy" definition, living space was ideal for 1-2 person.

washing machine, fridge, heating, kettle, oven, water pressure etc. was completely problem-free. Havent seen any pests at all despite the old neighbourhood. I felt very secure due to key controlled entry to the building and steel door of the flat. I didn't experience anything with the neighbors, actually I've not even seen or heard them at all. I might have been a bit loud sometimes, but didn't receive any complaints either. the street the apartment was facing was peaceful, nights were silent, easy to sleep. heating device was a bit loud, I turned it off when going to sleep. There were all the tools, material and textile available, I only bought some drinking water.
But the best overall is the location. The moment you step out from the apartment, you're in the heart of culture, theaters, music, bars, cafes, food, transport, shopping, etc. anything you'd crave for. many positive sights and experiences are around to corner ready to surprise you and make you feel alive.
Overall, I'd heartily recommend both the flat and the host with 5 stars. It'll 100% be my preferred spot in my future travels to istanbul.