I have been running the Bangkok Table Tennis Club for over 2 years. We have played at various venues over that time, and currently meet every Saturday 12-3pm at Sports Expert Club, Sukhumvit Soi 107.
If you would like to join us, follow this link.
https://www.meetup.com/Bangkok-Table-Tennis-Meetup\
Joining is totally FREE, and we collect a meetup fee of Bt.100 to cover table costs, drinks and coaching!