COEX Convention & Exhibition Center is a premier, large-scale integrated complex well-suited for international events, business, and leisure. It offers a blend of entertainment, shopping, and culture, appealing to both attendees and general visitors. Approximately 90% of reviewers highlight the vast array of facilities, including the extensive COEX Mall, Starfield Library, COEX Aquarium, cinema, and diverse dining options. It is praised for its modern design and cleanliness, with many considering it a "must-visit" for its variety. Accessibility is a significant pro, with about 85% of reviews noting its easy connection to subway lines, bus routes, and proximity to hotels. The integrated nature means food and shopping are readily available, making it convenient for long visits. However, about 20% of reviewers mention challenges with crowds, particularly on weekends or public holidays, making movement difficult. Some convention attendees (less than 5%) also noted a lack of seating and water fountains in the exhibition halls. Navigation within the large complex can sometimes be challenging.