The location of this hotel is unbeatable. It is close to several tourist locations, restaurants and shopping areas. The access is pretty easy from the airport (the bus stops right at the door) or by train (Seoul station is just 15 min by taxi), something really helpful if you come with family.
We chose it for the indoor pool, which has a couple of jacuzzi next to it. It was a perfect choice to relax after walking around.
It has several restaurants, but you can also eat nearby at the shopping malls or at the night shopping street. We tried the breakfast at the Aria restaurant and it had a great buffet with lots of options. The pastries were especially delicious.
The staff was very nice at every moment and they were fluent in English, and some of them in Japanese. They tried to help us in every way possible.
Something to improve would be in-room cleaning. We had a twin-room and moved a bed so we could make a big bed to have three sleeping, and under the bed was quite dirty. It was not cleaned during our three-night stay. Also, it was a bit dissapointing that there were few ammenities in the bathroom.