Hey Felix, we talked on FB before.
Korean address... type in ???????? to map.naver.com
The map link near bottom of this post has a dozen pics guiding you along the path from Cheonho Stn. The walk from there is maybe a little over 1 km or show the pics and map to a taxi driver, shouldn't be but under 4000 Won for a taxi.
Their phone: 02-483-3959 Taxi drivers can navigate to a location using the land line phone number.
Copy and paste the address up to and including the 234-6 into map.naver.com and you will see the club is a little less thanone km east-southeast of Amsa station and 600 meters west of Gubeundari Stn.
Their webpage...
http://www.koreapingpong.com/koreatt.php
Their Daum Blog page
http://blog.daum.net/koreapingpong
Their website map showing location...
http://www.koreapingpong.com/map.php
Get there real early, like 12 PM or 1, they like to run tourneys a little early in PM.
The son of the owner speaks good English.