left luggage in Lille

On the internet it says on different sites, also the one of the french railways SNCF there is a left luggage in Lille near the railway station near access atrium access side L to enter Euralille. Is this a good left luggage? How much does it cost? Anyone has experience?

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Try Googling - %26#39;gares en mouvement lille%26#39;

They indicate there is a left luggage office at Lille Europe, between 07.30 and 19.00 every day and about €5 per item, but from earlier TA posts on this subject not everyone is happy with them.

At the Hypermarket next to the station there are Customer left luggage selve serve cupboards but I%26#39;ve never had to use them.