We stayed here for almost a month and found it to be a good base for our time in Istanbul. The location is good, a 10 min walk to Taksim Square, with a bus stop and corner stores nearby too.
The apartment was very clean and check-in and out process was easy, and Perihan was helpful in answering our questions.
Best shower pressure ever, but a very soft bed if you're used to hard beds.
Our only issue was that the decor in the apartment was a lot more modern than in the photos, so it changed the feeling of the space from what we expected.
Overall a nice place to stay!