Located on top of the Mercure Ambassador Hotel, Rooftop Bar Kloud is one of the most successful rooftop bars in the Gangnam Station area and perhaps one of the few bars in the area to have a quiet cocktail with a great view. The top-shelf cocktails are delicious and the food (Korean-Western fusion) is decent. Full of after-hours office workers and those in Korea on business, the bar is more crowded on the weekdays than it is in on weekends.