Nazan and her sister were super friendly and helpful hosts. They were incredibly responsive and helpful whenever we had questions! Additionally they allowed us to check-in early, but it took a long time for us to leave the airport and so they ended up having to wait for us for a lot longer than expected for check-in. They did this with no complaints, so it was much appreciated!
The apartment itself was very clean, and was well-stocked. The laundry machine has both wash and dry functions, which was super helpful for us. Shower had good hot water but it is definitely on the smaller side.
The only small issue was that we saw quite a few tiny bugs crawling around the apartment, mostly concentrated in the bathroom. Nazan assured us that they were harmless, normal, and due to the weather, and they did indeed seem harmless. However, if you don't like bugs then maybe it might be something to keep in mind (I assume for any apartment in Istanbul, not just here).