Depending on the dish you get, your opinion of this restaurant changes. Some dishes have good portions and are really filling, while some dishes are really lacking in size. The side dishes they give are average, and so is service.
Incheon House provides both Korean and Japanese food, and the quality of each dish changes depending on your order. It really is a place where you have to try a bunch of different things in order to figure out what's good. Pork bone soup is usually consistently decent, if you're wondering what to eat. The salmon lover's maki is also filled with salmon pieces and can be very filling, but it is only available after 1PM as of late.
I wouldn't seek this place out, but I would return.