The flat is a great location to reach Beyoglu, and nice design inside, lovely big windows. The bed was very nice but as it is 2 single beds pushed together, it was uncomfortable for us as a couple!
We stayed 2 nights and the second night was interrupted by the upstairs neighbours making lots and lots of noise which was a shame, keeping us up all night. Irem apologised and hopefully it won't happen for future guests.
Overall a great location and perfect for a place to crash in Istanbul