I visited Seoul during the most recent National Day holiday. Hopefully this brief report of my stay will be useful.
As a Royal Ambassador / Platinum member, I was able to redeem a five-night stay at two InterContinental® hotels in Seoul. I stayed at InterContinental Seoul COEX the first two nights and at InterContinental Hotel Grand Seoul Parnas the next three nights.
I recommend taking bus No. 6704 at 4B/11A from the airport, as it stops right in front of both InterContinental® hotels. The bus stops at COEX first then goes on to GRAND. The bus ride took about 80 minutes and was very convenient. The two InterContinental® hotels are close to each other, and it’s approximately a 10 minute walk through an underground shopping mall to get from one to the other. COEX is close to "Bongeunsa Station" on metro Line 9 while GRAND is closer to "Samseong Station" on Line 2.
At the InterContinental Seoul COEX, I redeemed points to upgrade to an Elite River View Room, with club lounge access plus the minibar (excluding large bottles of alcohol). It was really great value.
At InterContinental Hotel Grand Seoul Parnas, I also recommend using points to upgrade to a suite room also with club lounge access plus the minibar. Again I think it is of great value.
Both hotels served breakfast in the executive lounge. Breakfast and the food served during Happy Hour and afternoon tea was great quality. I especially liked that the lounge served chocolate and macaroons at all hours, except breakfast.
Here are some tips of getting to some places of interest around the hotel.
To get to Gyeongbokgung Palace, go down to the hotel basement and take Line 2 to Seoul National University of Education, then transfer to Line 3. After visiting Gyeongbokgung Palace, you can stroll past a popular eatery called Tosokchon and order yourself a ginseng chicken.
To get to Myeongdong, simply take Line 2 and to "Euljiro 1-ga Station." It’s only a 15-minute walk from Myeongdong to the bottom of N Seoul Tower, and makes for an interesting stop along the way.
To get to Everland, you can take Line 2 to Gangnam Station through Exit 6, then walk towards the bus stop at the center of the road on the left, then take bus No. 5002 all the way to the terminal station.
Overall, my trip to Seoul was really great and I found Korean people to be polite and friendly and the city tidy and clean. There were Chinese signs and people speaking Mandarin everywhere, which made the city accessible to Chinese tourists.
Korea is one place I would definitely visit again.