I walked from the Pont de la Concorde on the Boulevard Saint-Germain all the way to the Place de l'Odéon. Saint-Germain and Odéon were my stomping grounds back in the 1970s, when I was working in Paris as a teacher.
The whole area has changed, but in Paris, the more things change the more they remain the same. The old Drugstore is gone, as is the Pub Saint-Germain. But Flore, Les Deux Magots, and the Brasserie Lipp are still there. Sartre and Simone de Beauvoir are gone too, obviously. Juliette Gréco is 87 years old, but she still sings once in a while.
I like the way the place below describes itself on the little sign over the orange awning: Bistro-Resto-Café-Bar. There are many nuances covered by all those terms. Notice that Lipp is a brasserie, and the Auberge Saint-Germain in the first photo here is a bar, a restaurant, and a brasserie that also serves grillades or grilled meats.
I've never had a meal chez Lipp, which specializes in choucroute and other Alsatian dishes. It always seemed to upscale and expensive for my budget. Maybe one day. It looks like the awning needs replacing.
The Danton is at the Odéon metro stop, and I've eaten there several times over the years. I worked just up the street at the Sorbonne in 1974-76. None of these places, except Lipp, would be considered particularly fancy or expensive. I wouldn't mind trying them all one day.