If you want a party atmosphere, stay in MyeongDong. If you want quietness with more expensive tastes, try Gangnam.
The hotel is a three star, and the rooms are tiny, but clean. However it is close to COEX for whatever meetings or exhibitions, and the subway for Samseong is closer than Seolleung.
They don't have a WowPass machine so the closest to get a WowPass is at the L7 hotel nearby. They did install a tour reservation machine just a few days ago.
You can do your laundry with the two washers and two dryers that take 5,000 KRW per load and detergent is 1,000 KRW. I suggest that you use the 1,000 KRW bills than the 500 KRW coins.
You get two bottles waters a day and the 15th floor has a dispenser that gives out hit water or cold water, as well as a microwave.
Breakfast is 19,300 KRW per guest and lunch is 42,000 KRW, and 49,000 on weekends. It is AYCE with apple and orange juice, three types of teas, strawberry, blueberry, and plain yogurt is available. Miso soup, a porridge, and a soup are available. Scrambled eggs, sunny side up, over easy, hard boiled, as well as omelettes to order are available. A toaster and a waffle maker are there as well. Sausage and bacon with forms of potato are served too, and a vegetarian section, as well as fruit section are available.
I only had lunch there once and all I remember most was two versions of gelato being served.