Hard Rock Cafe's last rating needs to be changed (7)
I believe the answer is:
granite
'hard rock' is the definition.
(I've seen this in another clue)
'cafe's last rating needs to be changed' is the wordplay.
'last' says to take the final letters.
'needs to be changed' indicates anagramming the letters.
The last letter of 'cafe' is 'e'.
'e'+'rating'='erating'
'erating' is an anagram of 'GRANITE'.
(Other definitions for granite that I've seen before include "A very hard rock from Tangier" , "Tangier (anag.)" , "Very hard type of rock" , "Hard stone from Tangier" , "determination" .)