Stayed here in transit in South Korea. The hotel has a partnership with Korean Air and puts a small percentage of passengers up in one of four hotels in the Incheon district. My wife and I got the Benikea hotel and we were very pleased with the hotel. It looked very nice, had great service and the room was quite nice. We also received complementary buffet for dinner, but there was a real lack of options for vegetarians, which should be noted.
Focusing on the room, it had everything you expect from a top quality hotel, was nice and clean, the bathroom was huge and the bed was amazing. The only criticism was that they put my wife in a double room, when we would have preferred a queen/king, but the bed was still fantastic and sleeping on it was a dream.
Location wise, it is the perfect transit hotel. However, there really isn't much to do in Incheon and going into Soul is just about out the question, because it is about an hour and half drive (according to the hotels staff). But if you are looking for a hotel close to the airport in transit, this hotel is pretty close by.
I can't comment on value, because I received this hotel stay complementary with Korean Air. However, it is a top quality hotel!!! If your flying Korean Air and have a big stop over, ask your travel agent for this hotel stay, it definitely made a 20+ hours stopover bearable.