Hanok (https://en.wikipedia.org/wiki/Hanok) is a terminology for the Korean traditional house.
We had a nice coffee at charming 'Hanok Espresso' which is the coffee house transformed from Hanok.
It is located just outside of Seoul City Children Library (https://childlib.sen.go.kr/childlib/html.do?menu_idx=52)
It has a light blue door.
It says "Coffee does not make you put on weight". But really? :-)