here are my Paris food and drink recs. all of these places are in the 3rd arrondissement where we stayed and were recommended by our airbnb host. they were all spot on.
breakfast/coffee
Sain Boulangerie - good selection of pastries, good coffee as well. I'm not a latte drinker, but my wife enjoyed hers here.
Poilâne - the croissants here are superior to Sain. no coffee (I didn't see any), but she does sell juices and kombucha - I didn't try them though.
Du Pain et des Idées - another great place for croissants. the pistachio/chocolate snail, the red fruit snail, and the apple tartlet are all insanely good. get one of each, and eat on them later in the day or into the next.
I.O Café - tiny cafe. it's crazy how little space they operate under, but great coffee. I went into this trip with the mindset that I would have to have espresso, not knowing I could get a pour over coffee. they don't call it pour over in Paris (or Rome). It's either filter coffee, or cafe filtro, or V60. This place called it V60.
I wish we would've popped into other cafe's that looked interesting, but we stuck with what we liked because we were doing something each day and had to get to a tour or a site with little time to spare.
there was another coffee shop we visited that also did a great V60, but in searching my notes from the trip I didn't write down the name of it

. All i can remember is they had a lot of books and magazines on the walls. I'll ask my wife if she remembers the place.
Dinner
Bistrot Instinct - this is where we ate dinner the first night in Paris, the one i posted the pics of. quaint place, great vibes, even better staff. I would've loved to have gone here again before we left, but it wasn't in the cards - all booked. HIGHLY recommend this place.
JJ Beaumarchais - this was the 2nd best dinner/meal we had. they do a tasting menu, and you can choose between a 4-course or 6-course menu, and they ask if you have any allergies or preferences (no meat, or just beef), and then they surprise you with the dishes. the 4-course is plenty, but if you're feeling like more, go for it. they did a tartare that was spectacular.
drinks
Le Barav - great neighborhood bar, cheap wine...honestly, most of the wine we had in France was cheaper and better than what we get here. the food was good here as well. good sandwiches and cheese plates. we were practically regulars.
BONUS - if you're going to Versailles, eat at Angelina in the palace. the hot chocolate is worth it alone.