This store is located just right behind Karakoy Gulluoglu baklava place and a short walking distance from karakoy ferry pier. Also, it is not popular to the tourists so you get delicious products as well as quick service.
Moreover, since this Baklava came from Gaziantep, it makes a difference in taste. However, because of this fact, you might enjoy their desserts more compared to baklavas in Istanbul center. Further, another must try item here is Katmer with ice cream which you need to get once in there.