Crossword Genius

Journalist stayed in Parisian stone flats (5-1-5)

Ross

I believe the answer is:

pieds-a-terre

'stone flats' is the definition.

'journalist stayed in parisian' is the wordplay.
'journalist' becomes 'ed' (short for editor).
'stayed' becomes 'sat'.
'in' means one lot of letters goes inside another.
'parisian' becomes 'pierre' (common French name).
'ed'+'sat'='edsat'
'edsat' placed inside 'pierre' is 'PIEDS-A-TERRE'.

I've seen this clue in The Guardian.
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