I am looking for folks to play ping pong with as well. I stay at the Omni on soi 4 Sukhumvit and it has a ping pong table that is rarely used. That's the good news. The bad news is that they are too cheap to put air-con in the room so you get very sweaty very quickly! Still it feels like a great work-out after an hour. I am not sure where I stand in terms of skills but have been playing only for 1 1/2 years and at 61 my knees often feel a little creaky. Still I would guess that I am at least above average for my age group with a wicked backhand, a shaky forehand and a serve that people feast on.
Brian