There is a new night club called "Sess" in Nisantasi. It used to be "Nis". Here is the map of the place: https://www.facebook.com/pages/Ni%C5%9Fanta%C5%9F%C4%B1-Sess/212970128779026
thanks and I found this party in the meanwhile: https://www.facebook.com/events/227469940674177/