It is an amazing apartment. It is fully fit description and location is kind of nice, not crowdy, and quiet, but to it's located near gulf so you need to always climb up to get some interesting places, and it might not be use to. But down to stairs, there is a new Galata Port kind of mall with dozens of bars and restaurants.
Huseyin was very pleasant in talking. But unfortunately, it was only in WhatsApp, but for someone, it is maybe a pros.
We had a nice time staying there. Fully recommended!