Neat feature in place to retire. Guy’s niche? (8,6)

I believe the answer is:

hospital corner

'neat feature in place to retire' is the definition.
(type of fold used when making a bed)

'guy's niche?' is the wordplay.
'guy's' becomes 'hospital' (I can't explain this - if you can you should believe this answer much more).
'niche?' becomes 'corner' ('corner' can be a synonym of 'niche').
'hospital'+'corner'='HOSPITAL CORNER'

(Another definition for hospital corner that I've seen is " part of sheet?".)

I've seen this clue in The Independent.

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