Emir was a wonderful host. Although we didn't get to meet him in person, he was always just a call away. He was very proactive for any help or advice we needed from him.
About the place, it's a cosy little apartment about 10 minute walk from the Galata Tower. Very happening street and amazing restaurants and cafes to dine out nearby. Very well equipped with everything you'd need.
We visited around Christmas, Istanbul was really cold during that time. The home was heated well and had hot water supply everywhere. The only downside was that there's no elevator in the apartment. Since it was winter, we had a lot of big bags, carrying them through the stairs was a pain. But this shouldn't be any issue during the summer months when you have fewer luggages.
Overall I had a pleasant stay at Emir's place. Would definitely recommend!