This is a wonderful place! If you are visiting Paris and want to be well-located, definitely consider Alexandra's flat.
It is steps away from all of the must-see sites, great restaurants and sweet cafes. Musee D'Orsay, Notre Dame, Eiffel Tower, Louvre, Place Vendome, l'Arc de Triumph, Champs-Elysees, are all with 1.5 miles. We didn't use any taxis or cabs except to travel to Versailles and over to Montmarte. Everything else was walkable!
Our family of 4 fit very nicely in the apartment. My two 20-something, 6+ foot tall sons fit just fine in the twin beds, and my husband and I found our bed to be comfortable! There is top floor room, above the bedroom floor, where were able to hang out together at night.
The six flights of stairs are a real thing, but not a bad thing, if you are in decent shape. We only climbed them once a day - we'd leave the apartment in the AM and return in the late PM. And managed them quite fine, and even after a few glasses of wine.
The service and communication was wonderful. Very gracious and prompt. Alexandra help with restaurant recommendations and questions about getting around. She was quick and kind throughout the whole booking process as well.
I will recommend this Airbnb to friends and family!