As is commonly the case in smaller South Korean restaurants and bars outside of Seoul, the bathroom is shared between the sexes. The room contains a sink, some stalls, and a curtained-off area containing urinals. In this case, there are two urinals behind the curtain and two stalls to the right of the photo.
For another example of a similar installation from the South Korean countryside, see the Fusion Soju Club located in nearby city of Gwanju.