I recently went to Istanbul, this is not a review about the trip. However, for what its worth, I do recommend a trip to Istanbul. Its great, clean, beautiful and I LOVED it. The only thing that I hated was the FREEZING/rainy weather. Yes, i prefer a hot & sunny one.
During my stay there, I noticed that in every corner of every street, there are small shop-like stands of “Kastan“! MY FAVORITE! I heart Kastan, specially when its really hot, in a very coooold weather. <3