This is my 2nd stay in this hotel. It is a business hotel (even the reception keep mentioning this to me) you will find all the usual hotel facilities/amenities here, nothing too fancy. The reason I chosen this hotel is because it is close to Seoul station and I need to change between two airports (Gimpo to Inchoen) for a transit trip. There is a convience store and a Starbucks just outside the ground floor lobby, you can get all the necessites there. Around the hotel there is not much choice of restaurants. On the 2nd day they did manage to upgrade me to Deluxe Room (34.4 - 35.5 M2) which is much bigger than Superior Room (24 - 27 M2). It also have a bathtub.
I don't recommend this hotel for SPG platinum members because it is lack of any suites. So don't expect a suite upgrade. It will never happen.