We've stayed at Iris's apartment for 4 days and absolutely loved our stay!
The place was tidy, very cozy, and had everything we could possibly need. We've had no problems with self-check-in or anything at all, everything worked great and was very convenient.
Iris was really nice, thoughtful, and very helpful, the communication was fast and easy.
The location was perfect for us as the apartment was located within a 5-minute walk from the ferry station and we really enjoyed ferry rides to different areas of the city, I think it's one of the best ways to explore Istanbul. And we've also had a nice walk from the apartment to Taksim square and even to Galata tower. The area where the apartment is located is pretty awesome too, it's pretty lively and is full of nice coffee shops, bakeries, and grocery stores.
I really liked the place and would be happy to stay there again!