Cüneyt is a great host. He was very responsive and helped me check in and out seamlessly.
The building is spacious for the location, with a nice living room that gets tons of light.
There's a good table and fast wifi which were indispensable for my online work.
There are great air conditioning units in both the bedroom and living room, which is very needed in the Istanbul heat and humidity.
There's also a clothes washer unit, which was a life saver, because I was beyond tired of hand-washing my clothes for the last week.
The kitchen is stocked with all the essentials, but you won't need it because the flat is a couple minutes away from many good restaurants. Aside from your standard Turkish food, there's Iraqi, Yemeni, Uyghur, Pakistani, Indian, Afghan, Syrian, Lebanese, and more types of food to choose from.
The area also has plenty of things needed for travel, there were a bunch of places that book train and air tickets, they also perform PCR tests, etc. This is great because it can be quite difficult to book these tickets on your own (the apps are usually only in Turkish and tend to require a Turkish bank card). I wanted to visit Konya and I wasn't able to book the tickets without help.
The flat is also just a two minute walk from the Yusufpasha tram line that takes you to all the sights of Istanbul for just 5 liras (about 25 cents USD). I used it to go to Hagia Sophia, Sultan Ahmed, etc in just fifteen minutes. This will help you save on taxis/avoid the fatih traffic.
The good thing about the location is that it is close enough to the tourist sites to get there quickly, but it is far way enough so that you're not surrounded by tourist trap/gimmicky things. The area is an authentic residential area.
The street is very quiet, it's just far enough from the major streets so you don't hear cars at night, and the neighbors are not loud or bothersome at all. There's a grocery store and other needed things just a minute from your front door.
Overall it is a great choice for the location and aforementioned things. I have stayed in many places in Istanbul and this area was definitely my favorite.