Bisou.

The 24 Best Bars in Paris

"There's no menu at this small bar off the boulevard in the Haute Marais. It's all about what you like—and what the bartender feels like making. You discuss your liquor and flavors of choice with whomever's shaking things up, and voilà! A mysterious cocktail will appear. Considering its small size and romantic vibe, it's best for a date or a small group of friends. There's a definite "let us impress you" vibe here—but not at all in a boastful, intimidating way. The bar staff are friendly and having as much fun as (they hope) you're having. It's also quite remarkable to see how they come up with concoctions off the top of their head—and remember who "ordered" what. They are definitely on top of their game." - Sara Lieberman