Location: I like it a lot, very close to Galata tower! Close to the metro station (both 3 minutes walk).
Apartment: very neat, exactly as in the pictures. The heater is doing a very good job, it makes you feel cosy at the coldest weather (unfortunately, the single bed room has no heater)! And the AC makes you feel nice breeze whenever it’s hot!
Cleanliness: the apartment is clean and they even offer a vacuum cleaner which you can use for long stays.
Value for money: totally worth it!
Flexiblity: Handan was extremely flexible, I arrived early and allowed me an early check-in without any extra charges. For the check-out, my flight was late, so I needed to check-out laye but that was not feasible because there was another booking after mine. handan was kind enough to allow me to keep my luggage with her until a later time without an extra charge. For me, this and location are what stood up the most!
PS (for muslims): bring your Shattaf, you would need it.