Carolina and her family were super friendly and welcoming during my entire stay. The apartment is in a beautiful old building so I definitely got that Parisian feel, but the apartment itself is very modern and comfortable so I got the best of both worlds.
The apartment is less than a block from the Paris Metro Line 1 (yellow) which gave me direct access to the Louvre, the Centre Pompidou, La Bourse de Commerce/Pinault Collection, Tuileries, and all the way to La Defense to grab the train to Versailles.
The neighborhood was also very cute and had loads of great restaurants, including Mi Peru, a hidden gem that was able to accommodate my request for really spicy food.
The only drawbacks of my stay were the lack of an elevator (the apartment is on the fourth floor) and the bunk bed, which took some getting used to as I hadn't been in one in years. By the time I left, though, the stairs weren't that bad and it was kind of fun getting in and out of bed (like staying over at a friends house).
Carolina and her family always had coffee ready for me in the morning and her adorable kitty, Milu, was there to greet me every day as well. It was just like staying at a friend's house and made getting out of the bunk bed totally worth it.
Other practical stuff: the shared bathroom is a decent size and the shower is actually quite roomy (there's even a rain shower in addition to the typical European handheld showerhead); the private room is spacious with lots of cubbies for clothes/planning outfits, a large desk with chair for writing postcards, and two comfy lounge chairs below the bunk bed for unwinding and putting up my feet after long days traipsing all over Paris; and Carolina is happy to share her kitchen for cooking or heating up leftovers to stretch those travel dollars.
It was a five-star experience in a warm, cozy home. Highly recommend and can't wait to go back for another visit.