Something soothing said in royal residence (8)
I believe the answer is:
balmoral
'royal residence' is the definition.
(I've seen this before)
'something soothing said' is the wordplay.
'something soothing' becomes 'balm' (I've seen this before).
'said' becomes 'oral' (I've seen this before).
'balm'+'oral'='BALMORAL'
'in' acts as a link.
(Other definitions for balmoral that I've seen before include "Scottish holiday residence of British royals" , "Royal place" , "Scottish castle and royal residence" , "Royal retreat in Scotland" , "Royal holiday residence on the River Dee" .)