Coves in Spain? Let's go! (6)
I believe the answer is:
inlets
'coves' is the definition.
('inlet' can be a synonym of 'cove')
'in spain? let's go' is the wordplay.
'in' indicates the answer is hidden within the clue.
'INLETS' is hidden in the letters of 'spain lets go'.
(Other definitions for inlets that I've seen before include "Silent kind of water channels" , "Silent as sea entries to land" , "Silent strips of water" , "Bays or coves" , "Sounds" .)