Twosome Place Samseong Downtown Airport Branch is a cafe selling coffee and cakes, located across from the Coex downtown airport terminal in Samseong-dong. It has table seating in various shapes and wide spacing between seats, so you can read a book or work on a laptop while drinking coffee. Inside the entrance there is a community room that groups of 4 to 8 people can use for up to one hour. The Wi-Fi is not good.