It was better than I expected. Nice small flat at the most convenient location in Paris (7 mins walking time from the central metro and RER station - Chatelet-les-Halles which goes directly to Disneyland and CDG airport), walkable distance to Louvre, Opera Garnier, Galerie Lafayette. 3rd floor, but comfortable steps. We were 4 persons with kids and fit there easily. You will have small kitchen with all the amenities and sofa bed, separate small bedroom with separate WC and bathroom with shower cabin. Shampoo, towels, linen, - everything is provided and clean. Overall the apartment was very clean.
Our check-in was after midnight but the host waited for us and didn't charge any late check-in fee. WhatsApp communication was smooth, price definitely low for the location. Would recommend this apartment for anyone looking for a budget accommodation in the center of Paris.