It's a smallish bedroom (probably about 12 feet by 15 feet), which is pretty much dominated by one large 3 sided desk and a few bookcases. By the time you set up the computers on the various sides of the desk, and then add in printers, scanners and such, it's pretty crowded. Did manage to squeeze in a spot for my old SNES, but haven't even bothered to hook it up.
30+ older beasties? I'd be curious to hear what that collection includes. Must be fun to fiddle with.