Coffee Sedona is one of the better coffee shops in Seoul and might be the first to accept Bitcoins as a payment option in Korea.
Coffee Sedona partnered up with Coinplug as their payment provider.
Address: Coex Mall, 159-5 Samseong-dong, Gangnam-gu, Seoul, South Korea
Phone: +82 2 3466 8008
site link: http://www.coffeesedona.com/