Influenced by Une si jolie petite plage?

Yves Allégret's 1949 film Une si jolie petite plage is a work that's even more purely devoted to depressing things than Les demoiselles is to joyous ones, and so at first glance it might seem unlikely that the later film could contain an hommage to, or other sort of influence from, the earlier one. Yet I can't help noticing that both films have similar central settings: in Plage, the lobby of the town's only open hotel, presided over by a decidedly ordinary-looking middle-aged woman, where most of the main characters hang around and chat, particularly about the ongoing newspaper coverage of the murder of an elderly female entertainer; and in Les demoiselles, a snack bar in the center of town, presided over by a somewhat ordinary-looking middle-aged woman, where most of the main characters hang around and chat, particularly about the ongoing newspaper coverage of the murder of an elderly female entertainer.

As we know, Demy's admitted purpose in including the offscreen murder subplot in Les demoiselles was to throw the joyousness of the film's main events, as played out in a pastel-colored fantasy version of the town of Rochefort, into even higher relief, reminding the audience of the world of grimness that lurks just behind and beyond the happinesses that we manage to find for ourselves. I wonder whether Demy, in the course of inventing that contrast, and inventing a setting where the principal exposition of that contrast could take place, might have been consciously or unconsciously inspired by Une si jolie petite plage, which must have been one of the grimmest films he knew.