I found the cutest local cafe in Seoul with the friendliest owners.
It’s called Portable Loft. They also have a craft / design store – Portable Lollipop.
You can see some pictures of Portable Loft, the owners and their friends here http://blog.naver.com/jungurion/220896163629.
And the Portable Lollipop website is http://www.portablelollipop.com/