The check in and check out process was smooth and the hosts were very helpful. The apartment is very clean and well-organized, it has everything you could need on a trip. Small kitchen, but it wasn't really an issue for me. The location is good if you want to stay in Karakoy and there are many bars and restaurants to go out nearby. On the flip side, it can get loud at night as some of the bars play music until quite late. The hosts did provide me with earplugs and all in all it wasn't that big of a problem.
Highly recommend this place overall.