The world famous Gangnam region of Seoul consists of locally well-known districts Apgujeong-dong, Cheongdam-dong, and Sinsa-dong, where you can find high-class restaurants and luxury fashion brand shops, cafes and clubs frequented by local celebrities. Gangnam’s most successful bars all have four basic things in common: refined interior designs, good customer service, high-quality menus, and a great selection of music. If you expect nothing less from your ideal drinking establishment, you will find plenty of options here.
 

Moon Jar

Hours    : 5:30pm~2am
Directions : Apgujeong Rodeo Stn (Bundang Line), 10-minute walk from Exit 5
Tel  : +82-2-541-6118~9
Address  : 38, Apgujeong-ro 46-gil, Gangnam-gu
 

T Lound

Hours     :Sun-Thu 7pm~3am
Directions : Apgujeong Rodeo Stn (Bundang Line), 5-minute walk from Exit 4
Tel : +82-2-517-7412
Address  : 13-16, Seolleung-ro 158-gil, Gangnam-gu

Check out these links for more information:
Gangnam Course: Oppa Gangnam Style~
Coffee Bar K