We enjoyed our stay at Munir's appartment very much. It is perfectly located (although took us some time to find..), close to Beyoglu/Taksim, Karakoy and Cihangir. The appartment is nicely furnished, bright and clean. The only negative is the bed, which is a wall bed. The matras was fine, but it took some effort to install the bed and the remote control to switch off the lights connected to the bed did not work (or we did not manage to make it work).
Munir was very friendly and prepared the place for our stay very well. Also during our stay he was responsive to questions.

All in all we enjoyed Istanbul and would recommend this appartment as a basis to discover this city.