The iconic and kitchy restaurant, “Kraivka” in Lviv has these three funny names for their restrooms:

Лятрина – a word I thought was unique to the Ukrainian diaspora, but perhaps it’s some old Galician vocabulary.
Потребник – “place for needs”
Виходок – “place of exit” – referring to the plumbing . . . I hope

Related posts about Ukrainian Disapora Vocabulary here and here.