Korean Air offered this hotel as a stopover in Seoul and this is a really good choice. The hotel is in the centre of Seoul, three minutes from the catholic cathedral. The room was wide and spacious. I was in South Korea for the first time and the funniest thing in the hotel was a toilet with lots of buttons signed in Korean (I checked only some of them:-)). We exchanged our vouchers for the quite nice western dinner and breakfast.
The strange thing I noticed was the announcement at lobby - pursuant to the government's decision, the temperature inside the hotel should not be higher than +20 degrees (it was -5 outside) - of course, it doesn't apply for the rooms where you can adjust the temperature to max. 27 or something.
