My wife and I recently completed a five night stay at this fabulous hotel. It is easy to see now, why it is so highly rated on this site. It is far from central, but its proximity to the transport network means that this doesn't really matter.
We got the Arex train from Incheon and then an Uber from Seoul station - all very quick and efficient. We arrived a little early and were asked if we were Bonvoy members - when we said we were Titanium, we were whisked up to the lounge and checked in by a lovely lady called Yena. The staff who greeted us in the lobby and the lounge set the tone for the whole stay - they were excellent. In fact it was the staff that set this hotel a few notches above other equivalent hotels. Without exception they were helpful and a credit to the brand - this was shown by the lad who first met us in the lobby to take our cases. He saw us later well away from the hotel as he was on his way home, he recognised us and approached us to see if we need any help or directions. Top class!
Our room on the 31st floor was clean, quiet and comfortable - everything you would expect form a hotel of this calibre. The bed was excellent.
The other thing that makes this hotel stand out is the Exec Lounge. The service, the food and the staff again could not be faulted. The lounge is open 6.30am to 11.30pm 2ith breakfast served until 10am. There are then evening hors d'oeuvres from 4.30pm until 9pm. The breakfast offers wonderful variety of foods to suit the varied palettes of the clientele - including and egg chef and the ubiquitous ( very nice) kimchee.
The evening offering was also very good with a chef on hand to prepare Pho to order and a good variety of hot and cold food. All washed down with an excellent choice of beverages, both alcoholic and non-alcoholic, to wash the food down.
The Marquis Fitness Club is another 5 star feature. Slots in the swimming pool have to be booked, but this isn't a problem.
Beneath the hotel is the huge Shinsegae shopping mall with lots of luxury outlets and a loads of other shops and restaurants.
The metro station called Seoul Express Bus Terminal is also under the hotel. It gives access to three metro lines, and there are loads of bus stops outside on the main road. Seoul public transport is excellent and, if you are a foreign tourist, I recommend the 'Climate Card' , which gives unlimited travel on the Metro and buses for a very reasonable price.
I have nothing negative to say about the hotel - we are glad we chose it and can't wait to return.