Bathroom. Though I could be wrong and you're already using it as a second server room and theater.

The Boom is a perfect bedroom, bathroom and kitchen music appliance. Of course it can be useful in any room, but those are rooms that might not already have a dedicated stereo system like a den or family room/living room might.

I have two SB3 but only one is set up right now. I'd also like to get a Boom for my master bedroom, especially since we can use the multiple alarm features (my wife and I always get up at different times during the week).