Where does “відпочивальниця” come from?

відпочивальниця (Ukrainian) comes from Ukrainian відпочива́льник, from Russian -льник, from Ukrainian -ль, from Ukrainian -ь, from Proto-Slavic -ь, from Proto-Indo-European -is — Forms nouns from verbs.

Ancestry of “відпочивальниця”, step by step

StepLanguageWordMeaning
1Ukrainianвідпочива́льникholidaymaker, holidayer, vacationer
2Russian-льникSuffix appended to nominal stems to create...
3Ukrainian-льUnproductive deverbal suffix used to form nouns denoting a product or a result
4Ukrainian-ь—
5Proto-Slavic-ьForms nouns; From adjectives; From participles
6Proto-Indo-European-isForms nouns from verbs
Every word from Proto-Indo-European -is →Every word from Proto-Slavic -ь →Every word from Russian -льник →