In Paris, the 2 best flee markets are “Marché aux Puces, porte de Montreuil”, reel vintage, interesting, you’ll have to search for hidden good things! Good for art glass
As for the french lace, there is a good shop at “marché aux puces” porte de Cligancourt, but it’s expensive now,
Real nice peaces!
The tubes stations have the same names, porte de montreuil and porte de st ouen.
They are open only on saturday, sunday and monday.
Also you have the marche aux puces, porte de vanves, for Art Deco, 1900’s items. Also lace, I think, opne on saturday and sunday.
Hope you’ll envoy!