First, IST is one of my FAVORITE cities in the WORLD. Last time I was there, it was much more touristed since it was before 9/11 (it was 6/99). The four seasons was much too expensive for us (we would need two rooms), so we stayed in the Yesil Ev which is down the block. It is a converted mansion and is beautiful, but not really luxury. Now that the FS is cheaper, I am trying to convince my family to go back, but its really a no