Recess, alcove (5)
I believe the answer is:
niche
I believe this clue is a double definition.
'recess' is the first definition.
(I know that recess can be written as niche)
'alcove' is the second definition.
(I've seen this before)
(Other definitions for niche that I've seen before include "A small recess or easy job" , "Suitable position (in market, life etc)" , "Recess; place in life" , "Particularly suitable position" , "Select place in market" .)