Living in Marie's apartment is just like living at a friend's place. The apartment is very nicely furnished. You have all the necessary amenities available including a very well-equipped kitchen. Marie responded promptly to all our messages, and even asked proactively how everything was going in the beginning and at the end of our stay. Overall, I highly recommend Marie's apartment.
There are some drawbacks though, if someone wants to use the sofa bed as described in the listing. I was travelling with my boyfriend, and we are both sensitive sleepers who cannot sleep on the same bed. When searching for a place to stay in Paris, I deliberately chose from places with two beds. The description of Marie's place looked perfect for me, as it says that the place is available for 3 guests with 1 double bed and 1 sofa bed, the latter with the description "mattress overlay available for more comfort." However, after I had made the booking, I was told to pay 10 euro extra per day for the sofa bed, totalling an extra amount of 90 euro because we stayed for 9 nights! That was almost a 10% increase of the total price. (Maybe I should have asked explicitly about the sofa bed part before I made a non-cancellable booking; that I cannot complain. ) I was very surprised, because this was my first time out of my 12 Airbnb experiences that I was additionally charged for something explicitly listed in the description. But I still paid, thinking that indeed the sofa bed would cause additional work for the host. When we arrived, the sofa bed was still in the shape of a sofa with extra linen sheets by its side. We needed to extend and make the sofa bed and cover the duvers ourselves. Also, it was not a comfortable sofa bed and had an uneven surface -- the head position was higher than the feet position, and one could clearly feel the metal things connecting different parts of the sofa, which was uncomfortable for sleeping. I wouldn't recommend anyone to sleep on that sofa bed, particularly if you are not young, or if you are staying for many nights, or if you are taller than 170cm.
Surely, charging extra money for a sofa bed is not unreasonable, because that indeed could cause extra work for the host. So far, I have had in total 3 Airbnb experiences with sofa beds, and even though I had never been charged for using them before this experience (the availability of sofa beds was always explicitly stated), I always tipped the hosts to show gratitude. I am sorry to say that my experience with the sofa bed at Marie's place was unfortunately not a good one, because of the unexpected, extra, and 10-euro-per-day charge, and also because of the bad experience with the sofa bed itself.
I wrote very long about the sofa bed just because I haven't found such information in the reviews before my booking. Except from the sofa bed, I was very happy about our stay at Marie's place. Just wanted to emphasize again that Marie's cosy and beautiful apartment could be a perfect stay for you, if you don't need the sofa bed.