Restaurant in street covered by writer (6)
I believe the answer is:
bistro
'restaurant' is the definition.
(bistro is a kind of restaurant)
'street covered by writer' is the wordplay.
'street' becomes 'st'.
'covered by' is an insertion indicator.
'writer' becomes 'biro' (I've seen this before**).
'st' going inside 'biro' is 'BISTRO'.
'in' acts as a link.
(Other definitions for bistro that I've seen before include "Small informal French restaurant" , "Modest restaurant" , "Cheap restaurant" , "Orbits (anag)" , "Small bar-cum-restaurant" .)