The Berdichev Synagogue in Tzfat’s Old City is affiliated with the Berdichev Chassidic tradition, rooted in the teachings of Rabbi Levi Yitzchak of Berdichev, one of the great disciples of the Baal Shem Tov, famous for his fierce advocacy on behalf of the Jewish people. The shul serves Chassidim who follow this tradition. Check locally for current minyan times.