I would think picking up the machine would be easiest there as well.

I think you might be better off in the living room instead of the bedroom. Although I can just imagine the potentially amusing jokes about going into the bedroom for a quick round of pinball...

The place (Pinball Heaven?) does look a bit high, but they have a lot of good maintenance and purchasing tips / FAQ pages that are useful.

One more thing - make sure you play the game a few times before purchasing it. If possible, spend 10-15 minutes actually trying the game before buying it. If you notice anything strange in the gameplay (misaligned ramps, weak bumpers, etc.) you should make note of it and take a closer look. Once you buy it, that minor annoyance will become a nagging problem until it is fixed.