The apartment is very central. Few minutes walk from Istiklal street (somewhere in the middle), from cihangir area and Karakoy. It is located on the ground floor which is very convenient especially that most buildings do not have elevators. Though it is located on a hill, but you won't feel it if your main target is Istklal street as it is only 2 minutes away.
You can find all amenities in the house. Communication with the host is very easy and fast and they will make sure to make you feel comfortable as much as they can. They even changed the bed mattress for me !