I cannot stop talking about how great this hotel is. From the check in, the concierge, the room, the executive lounge and every interaction with staff in this hotel - you are treated like a VIP and as if you were staying at the Ritz. The hotel and rooms are very modern and comfortable, with the rooms being a decent size. Very clean rooms. We had a small issue with the a/c when we first arrived, but an engineer arrived promptly, and our room cooled down in no time. They even offered us an electric fan to use during our stay if we preferred it cooler in the room. It was not needed though.
Everyone speaks very good English, and the concierge and doorman were very helpful with directions and information. We also had free wifi in our room with a very strong signal, as well as in the executive lounge (and never bothered with a daily password - once you were on the internet - you were on w/o daily log-in required).
As a platinum member, I was offered a wonderful cheese and fruit platter with a bottle of wine as my welcome gift. This was by far the best welcome gift I've received from a hotel rewards program upon check-in (as I'm a platinum at Starwood, and I've been offered only a chocolate bar by SPG properties upon check in).
I was also given access to the executive lounge as a Platinum member which was again, excellent. Excellent assortment for breakfast and for evening appetizers, with a hot and cold selection for both as well as a nice complimentary bar offering in the evening that included liquor and wine. It was "help yourself", but Kayla worked the lounge in the evenings, and she was always serving us and making sure we were comfortable and enjoying ourselves in the lounge. Kayla was wonderful, and helped make our stay that more enjoyable. We truly felt welcomed and appreciated at this hotel.
Finally, the hotel is located close to the subway - a short two block walk. We used the subway during rush hour just one or two times to cover long distances quickly but taxis are so cheap in Seoul, this should not even be a deciding factor for your stay at this hotel.
I hope to return to Seoul in the future, and if i do, I will definitely look forward to another stay at the Courtyard Marriott. I just wish other hotels (Starwood) could be as good.
I also want to just mention one last thing about this hotel that I thought was exceptional. I stayed for two nights on my reservation (using free night certs), and on the 3rd night, my friend used her free night cert. Although I was a platinum, and my friend was not, the hotel gave me my platinum benefits for the 3rd night (lounge access) even though the 3rd night was under my friend's reservation. Now that is what i call GREAT service. 3 nights earlier, Osaka Westin made us check out of my upgraded room to a standard room for our last two nights of a 5 night stay when we used my friends points for the last two nights, and they denied me access to the exec lounge because the reservation was no longer under a "platinum member". I plan to give my business to Marriott going forward and am finally done with Starwood and their lack of customer service towards Platinum members.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.