The MEA is in the ideal place for those visiting the business district of Yeouido. I have had two one-week stays there this year and have been very pleased. The area is pleasant and safe; the park is particularly pretty in spring and autumn; the metro system is within 5 minute walk, as are plenty of shops and restaurants. Yeouido is the right side of Seoul for the airport - one manages to avoid the worst of the traffic.
You can regard the rooms either as mini-apartments or as large hotel rooms. There are several different layouts available, but all contain a spacious living and sleeping area, a modern bathroom, and a well-equipped kitchen (including washing machine, tumble dryer - superfluous if using purely as an hotel, of course. The rooms and bathromms are furnished to a high standard, and the beds are particularly comfortable. Heating and air-conditioning are efficient, though a little confusing at first since they run off totally separate systems. Not all the rooms have good views, but many do.
Service at the front desk, in the Park Cafe/Restaurant and in the SOO spa is first-rate - not always a given in Seoul, in my experience. Staff remembered my name from my first visit and I was exceptionally well treated, particularly in the Park Cafe (thank you Leeny and Rupina) where breakfast is served and where I tended to eat a light dinner from their menu, which features internationl cuisine. I sampled some of the many restaurants (Chinese, Indian, French, Italian, as well as Korean) within easy walking distance at lunchtimes.
There are other restaurants and a convenience store at the lower levels in the building. The convenience store has a limited range, but is quite a bit cheaper than the food in the rooms - the hotel does provide a couple of free bottles of water daily, though.
Internet access is not cheap, but you can take one of the internet/breakfast/laundry packages which offer reasonable value. Security is good, with a room key required to access the room floors via the lift/elevator.
All in all, this is one of the better hotels I have used on business trips in recent times. Certainly with four stars - five since I'm feeling generous.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC