I've been here a couple of times for lunch and once for dinner. During lunch, Seoul Garden has a long list of lunch specials that are well worth the price - ie 7-8 dollars for a bowl of noodles or a plate of kal-bi. The food is very good and the side-dish selection (served at all korean restaurants) are very much to my liking.
Dinner here is very delicious too and everything is competitively priced with other Korean restaurants in the area. I would very much recommend this place for its deals and delicious meals!
Service was also pretty good - so no complaints there. The only thing that could be a little awkward is that it is located right next to a strip club on Kapiolani Blvd.