This place was fantastic and I would stay here again in a heartbeat! I was there for three nights with my husband and one-year-old son. The location was perfect. Tons of restaurants, bars, and shops right there. And for sightseeing, Notre Dame, Pompidou Center, and Picasso Museum are all a short walk, and the Louvre and Jardin des Tuileries were farther but still walkable.
The only hiccup was that on our arrival, the crib that was provided was broken (the sides would not click into place), but I contacted Christine through WhatsApp and she immediately responded to fix the problem. And for anyone travelling with a baby, now you'll have a brand new crib! The apartment ended up being great for my son, since it's all one level (except for the shower but we just closed the door), and we blocked low kitchen cabinets with stools so he couldn't get inside. For a bigger family it would obviously feel cramped, but for a couple or a little family of three like us it was the perfect space.
We also really appreciated the detailed guides (in French and English) that Christine provided with restaurant recommendations, as well as instructions for all appliances (came in handy for the coffee maker). I remember reading something in other reviews about noise, but I found the apartment to be incredibly quiet, and we had the windows open almost the entire trip. The doors to the courtyard block any street noise, and the only time I heard anything was when someone came down to recycle glass bottles (the recycling is not far from the door to the apartment).
I loved this apartment and wish we could've stayed longer! If your dates are available, book it!