Room Service 301 is a cafe on the Yangjaecheon Cafe Street in Dogok-dong, Gangnam-gu, Seoul, selling drinks and cakes. It serves strawberry cake, teddy bear cheesecake, and specialty bean coffee, with metasequoia trees visible through a large window. A peach tea welcome drink arrives while ordered drinks are prepared, and the cafe uses the third floor and the rooftop together. Three large windows face Yangjaecheon, and the cafe is not quiet because many people take photos.