Coffee Gongjakso is a small hand-drip cafe located behind Songridan-gil and the lake cafe street in Songpa-gu, Seoul. It roasts its own beans and makes every drink with care, including the coffee of the day, and also serves homemade cake. During the briefing, staff adjust even minute temperature differences and offer coffee consultations. It is closed on Sundays and has short opening hours, so it tends to close before the end of the workday.