Husband sitting in pleasant recess (5)
I believe the answer is:
niche
'recess' is the definition.
('niche' can be a synonym of 'recess')
'husband sitting in pleasant' is the wordplay.
'husband' becomes 'h'.
'sitting in' is an insertion indicator.
'pleasant' becomes 'nice' ('nice' is associated in meaning with 'pleasant').
'h' inserted inside 'nice' is 'NICHE'.
(Other definitions for niche that I've seen before include "Particularly suitable position" , "Place that's cosy" , "Specialized market" , "small specialised market" , "Recess - suitable position" .)