Pleasure in place of unrest (3)

I believe the answer is:

fun

'pleasure' is the definition.
(fun is enjoyment or pleasure)

'in place of unrest' is the wordplay.
'in' indicates a hidden word.
'FUN' can be found hidden inside 'place of unrest'.

(Other definitions for fun that I've seen before include "'Merriment, playfulness (3)'" , "Jollification" , "entertainment" , "Light-hearted pleasure" , "Enjoyment" .)

I've seen this clue in the Evening Standard.

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