I had soo late check in but Fehmi kept help me in. The location is super close with the Blue mosque, Hagia Sofia, and tram station in Sultanahmet. The place is also very clean with 2 big bedroom, a kitchen full with it's kitchenware (plate, bowl, pan, etc), microwave, and many other utilities.
You can also put your baggage on the apartment when your still cant check in yet or you have checked out but still want to walk around Istanbul while waiting for your flight.
Thank you! So recommendedd