Small space in big cities (4-1-5)

I believe the answer is:

pied-a-terre

(Other definitions for pied-a-terre that I've seen before include "Small home kept for occasional use" , "Small secondary flat or house" , "Lodging kept for occasional use (French)" , "bijou accommodation" , "Dwelling for occasional use" .)

I've seen this clue in the Newsday.

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