These are essentially rabbit hole bathrooms. You can place them almost anywhere and your sims will be able to use them to relieve their bladder, hygiene, and even woohoo! Useable by all ages.
I like the idea of this very useful mod very much and I think it will be very handy to very many people. Very. See how annoying the word “very” can be after a while? Let’s take it out of the Sims 4 emotion names! Now instead of “Very Energized” your Sim will be “Exhilarated” and instead of “Very Sad” they will be “Depressed”. (This tuning mod goes very well with my Bipolar Trait and the other mood intensive traits I’ve created.)