Time Out says
Ensconced in Soi Pridi Banomyong 1, Aroon is a casual venue that offers good vibes, cheap drinks and alternative music. The place also serves as a cooking school during the day (see more info at aroonbangkok.com), which explains why the walls are decorated with Thai-style kitchen elements, such as a rice-winnowing basket, a clay pot, and a bamboo fan. Aroon is fast becoming known for its selection of cocktails made with Thai spirits.
Try Suriyapprakha (B200), a mix of Thai brandy and passion fruit, and topped with burnt cinnamon, or the mojito-inspired Yim Chuen (B200), which mixes Thai dark rum with kaffir lime and ginger juice. Happy hour starts and goes on until late (20:00 to 22:30), and offers draft beer and wines starting from B180.