sleeping accommodation vs sleeping room

sleeping accommodation and sleeping room both are nouns.

Word	Noun	Adjective	Verb	Adverb
sleeping accommodation	Yes	No	No	No
sleeping room	Yes	No	No	No

As nouns, sleeping accommodation and sleeping room are synonyms defined as:

sleeping accommodation and sleeping room: a room used primarily for sleeping

Other synonyms of sleeping accommodation include bedchamber, bedroom, chamber.

sleeping accommodation (noun)	sleeping room (noun)
a room used primarily for sleeping	a room used primarily for sleeping