Great place in the center of Beşiktaş.
When you exit the house you are met with around 10 inexpensive breakfast cafes. If you walk like 1-2 mins to the main street you can see a bunch of different places where you can eat, drink coffee or tea, try local foods and desserts.
The place itself is clean and surprisingly quiet, as the main street tends to be really lively at day and, especially, at night!
Görkem is a helpful host, gave me a bunch of advice on some issues and answered a bunch of questions I had.