Two bathroom housing should be the default, or single people housing should be drastically cheaper.
This is always an issue in my household too.
Discussion
Drives me crazy. Lol. I knocked on the Door and asked what she was song and got a response of "oh nothing, I'm just sitting listening to music". Kid, you have a bedroom, a living room with 2 couches & a loveseat, dining room, etc. You went with sitting on the edge of a bathtub and made me suffer while you listened to music? Gtfo!
Not to encourage cruel parenting but I mean it is your house, take that as you will.