Sleeping accommodation rocks for rodents (7)
I believe the answer is:
dormice
'rodents' is the definition.
(dormouse is a kind of rodent)
'sleeping accommodation rocks' is the wordplay.
'sleeping accommodation' becomes 'dorm' (I have seen 'overnight accommodation' mean 'dorm' so perhaps 'accommodation' could also mean 'dorm'. I am not sure about the 'sleeping' bit.).
'rocks' becomes 'ice' (both can informally mean diamonds).
'dorm'+'ice'='DORMICE'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for dormice that I've seen before include "Bushy-tailed rodents" , "creatures" , "They will hibernate" , "Little hibernating rodents" , "Furry animals" .)