There seems to be some confusion in the reviews about which establishment this is; there are two…read morerestaurants helmed by female chefs in Paris, one named simply "Buvette" (by the American chef Jody Williams; there is also a NYC outpost of the same name) and one called "La Buvette" (this is the correct page for the restaurant operated by Camille Fourmont).
While I love NYC's Buvette, La Buvette is an entirely different sort of restaurant and is my NUMBER ONE recommendation for friends visiting Paris who enjoy natural wine/small plates/a slightly chaotic atmosphere. I make sure to come here as many times as I can whenever I visit Paris, and I've even gone to a La Buvette pop-up in NYC when the chef came last year. I'm definitely a La Buvette groupie.
A buvette is a restaurant that sells wine to go and to drink in situ, along with a selection of small plates. While I hate the ubiquity of the term 'tapas' to describe dishes that are not quite entree-sized, you can think of La Buvette's dishes as basically tapas: smaller portions meant to be ordered in multiple and shared over a bottle of wine.
The wine selection here is tightly curated and I've never had a glass that I disagreed with -- everything is pretty simpatico if you're into this style of wine, and the staff are quite helpful in steering you toward bottles you might enjoy. In past visits, I've often found myself ordering over half the menu, which is written on a mirror-board on the wall and changes daily. Everything is quite simple, made with excellent ingredients, and quite good. Note: this is not a full-service kitchen, so don't expect an elaborate dinner. Think of this as an appreciation of simplicity and purity of flavor, and you'll have a much better time than if you expect a 10-hour cassoulet or something. Get some cheeses and charcuterie, and absolutely get the big white beans with citrus zest. Savor the flavors.
While I'd love for this to remain a hidden gem, the secret has definitely gotten out, and it's not really much of a "neighborhood" establishment anymore. Expect a line unless you get there quite early, and note that you won't have any privacy because the space is tiny, and you may end up drinking your wine standing by a tiny corner of the counter. To me, that's part of the charm, and Camille Fourmont has created quite a remarkable place that I find simply perfect. It's a must-visit in Paris!