This flat is in an incredible location! You are on the street of the Opera, which is walking distance from Place Vendome and Galeries Lafayette. Furthermore, it is a quick metro right to the Arc de Triomphe and Tour Eiffel. Louis was a good host who responded quickly to my messages. Furthermore, the agency that handled the check in also responded quickly to emails, as we were running a few minutes late.
My only warning is that it is a bit difficult to climb up the stairs to the loft (the rails were a little shaky). Also, the room with the lofted bed has a low ceiling (cannot sit upright in bed), BUT the sofabed is also large and comfortable. I would recommend this airbnb for younger travelers :)