Writer goes around street to find restaurant (6)
I believe the answer is:
Here is my best explanation:
'restaurant' is the definition.
(bistro is a kind of restaurant)
'writer goes around street' is the wordplay.
'writer' becomes 'biro' (I've seen this before**).
'goes around' indicates putting letters inside.
'street' becomes 'st'.
'biro' going around 'st' is 'BISTRO'.
'to find' acts as a link.