I highly recommend and would stay here again! The location was perfect: a few steps from Rue Cler, a metro stop, lovely restaurants, a pharmacy, grocery stores, and short walk to the Eiffel Tower. The flat was super clean, comfortable, and a nice size for me and two teenagers to stay for a week. It's well stocked and was really quiet even though we were in the middle of the city. I appreciated having a full-sized fridge and dishwasher.
Armelle is a wonderful host. Check in and check out were very easy and she was extremely communicative.
When considering this flat, please be mindful that the stairs are steep and there is no A/C. We were there when the high reached 90 F, and it was fine with fans and open windows. I'm not sure how it would be if it was hotter than that. It does seem like you are staying in someone else's home rather than a permanent rental, but there seemed to be enough space for our things and the decor is uncluttered and nice. There is also more seating in the living room area than appears in the photos.