We moved our training room into a new suite (B-4) last week. We are back in the "B" suite where we were a few years back, but in a larger room. There is plenty of room both for our 4 desktop computers and the conference table with laptops. The server closet and office is attached with a door between the training room and the office.
This time we are going to have the projector ceiling mounted and all computer cabling hidden via cable runs or under table mounts. Coupled with our use of wireless keyboards and mice this should make the environment much less cluttered. With the extra room we also plan to add two more desktop computers. It would be nice if they were Mac's (or maybe one Mac, one Linux) but no promises.