This is currently our favorite hangout.
If you want to treat yourself to some authentic Korean fare, then this is a place for you.
Conveniently located in the heart of Espana, near UST, this restaurant would endear itself to you by their unique tasting dishes and "banchan" (Korean side dishes served with rice). You could actually have 2nd servings of the side dishes for free!
And the meals are not that pricey too.
Overall, I recommend that you make that Seoulia stop when you visit the area.