Ilkem's place was great. I'm not sure if the listing indicates it, but it's located up some stairs on the second floor, much easier than some of the fifth-floor walkups throughout the city. The location is very nice, just slightly outside of the action of İstiklal Caddesi, and with a bunch of neat attractions around it in the neighborhood of Cihangir.
The place was quite spacious for the cost, and had quite modern fixtures, though it could be a bit dark at times. The location is quite nice, on a very short street away from the neighborhood's major thoroughfares, so it was fairly quiet for a city as loud as Istanbul. The bathroom was also quite nice, and Ilkem was very responsive throughout the trip. Overall, a great place!