Nothing sells a house like a kid stripping in the middle of a mess.
But Moooooom! I like having my hair over my eyes!
Wouldn't it be nice to tell your kid to "go play doctor" and he'd step into his own little TARDIS and go on an adventure while you take a nap and drink some wine? I don't even have kids and this sounds pretty great.
A super fort, super bunker, super bed, super hideout and super play structure. This kid is gonna turn out awesome. BAM!