Something nice to handle (5)

I believe the answer is:

treat

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'to handle' is the definition.
('treat' can be a synonym of 'handle')

I don't understand the remainder of the clue.

(Other definitions for treat that I've seen before include "Nurse" , "Enjoyable surprise gift" , "Alternative to trick" , "Indulgence; deal with" , "Deal with - source of great pleasure" .)

I've seen this clue in the Evening Standard.

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