Berk's place was excellent. The apartment itself was beautiful, clean, and very well maintained (exactly like in the pictures). And Berk himself was quite helpful: he left complimentary food and drinks in the kitchen, contacted us to check in over the course of our stay to make sure we were ok, and was flexible about our check in and check out time. The place itself is in a great location -- we were able to get around to see the major sites in Istanbul really easily.

Thanks for a pleasant stay!