My son is just turning 3 and is not potty trained at night, so he can't share with mil yet. (think super stinky) I don't want him in the living room bc then we all have to go to bed at 7:30. Blah! In the past I have brought an air mattress for my son, but don't feel like lugging it down this time since there is actually space available. My mil has knee replacements, so she will find the walk in shower easier to use anyways. Also she's extremely picky so hopefully a nicer bathroom will put her in a nice mood. I know that is wishful thinking! But this is her first and probably only trip, so I can give up the master this once.