I stayed for one month so had time to get a good feel for the apartment and area. The host Murat was fantastic. Check in was easy and communication was prompt.
The location is superb. Super cute neighborhood with tons of cafes, restaurants, and stores. Lively during the day but nice and quiet during the night. It was about a 5 minute walk to the ferry and 8 to the metro. Kadikoy is less touristy than the European side and has more of a local feel.
The apartment was sizable, and felt very spacious for two people. It had everything I needed to be comfortable and productive during the stay. It was hot outside during my stay but the AC made the apartment nice and cool. The beds were comfortable and the shower had outstanding water pressure. The wifi was sufficient to stream video.
Overall I would recommend anyone who is considering to book now!