The location of their Airbnb is wonderful! Across the street from a rail station and so close to the Lourve. Extremely convenient.
The elevator is extremely small. We were traveling with a baby which made carrying a stroller etc. somewhat difficult, but as long as you have compact baby items you should not have a problem. The apartment is on the 3rd floor so walking up and down with a child in tow would not be ideal.
The apartment itself is quite spacious. Having 2 bathrooms is as very nice. The kitchen is very small but has a refrigerator and freezer, anything you might need.
The AC was broken during our stay and it was quite warm but the host provided fans and with the windows open it was manageable.
The host team overall was very helpful with anything you might need in Paris from booking transportation to babysitting to general recommendations.
Overall a very pleasant stay.