Here's a helpful review of the apartment and surrounding areas:
Our stay at Aux Pieds de NOTRE DAME was great. It's located right at the edge of the Latin Quarter closed to the Siene so you're not more than a 2 minute walk to the water if you are using the Siene as your launch point. Realistically, you're a brisk 20 minute walk to the Louvre and surrounding gardens, but the Metro as I'm sure is mentioned on other reviews/the listing is literally right outside the apartment. Paris is a large city, and even if you're in shape, you'll find yourself spending a lot of time by foot/metro walking around town. I would say that if you're not that interested in the Latin Quarter for hanging out, you may want to consider staying on the right bank instead, but the restaurant options in the Latin Quarter like every single street in Paris are literally endless.
With no air conditioning, the place gets stuffy fairly quickly. Definitely open both the bedroom and kitchen window the second you walk inside to get that nice cross draft. There is a fan in each room which helps circulate air as well.
We used the kitchen a few times to cook some eggs and toast. Lory has a full kitchen set and dishes with REAL wine glasses which is nice(You won't find them in most restaurants). When you come out the door, there is a great place immediately across the street/alley for Crepes(Culture Crepes), and if you're celiac/gluten free they make them GF for an extra 60 cents.
Most of your grocery/bakery/coffee needs are directly to your left. When you step on to Rue Saint-André des Arts there is a coffee shop called Malongo about a minute walk which has arguably the best coffee in Paris(I'm a snob and good coffee is hard to find in Paris). There are two grocery stores, Bio c Bon, and another a minute further that is a full supermarket with tons of things. There is also a great wine shop next to it if you're looking for a little more help choosing a wine.
Hope this is helpful for your stay. Thanks Lory again for the constant communication throughout our stay. It didn't go unnoticed.