We've booked two rooms for our big family, but both rooms were very dirty, old, and moldy. You can smell the old moldy smell in the bathrooms. The bed sheets had holes and hair (not sure if they have been cleaned). My son woke up with a bug bite as well.
We've seriously thought about giving up the rest of the nights (booked 3 nights) after our first night there, but could not find suitable hotels near Seoul is busy Christmas season....
Also, the pictures in the website must have been photoshopped, looks very different in the front entrance and in the rooms.