Although the six flights of stairs are intimidating, the flat, the view, and Sonia's hospitality are well worth it. Check in was a breeze and all communication with Sonia was prompt and easy. The apartment is conveniently located near the metro and it's very fast to get almost anywhere. The flat itself was homey and spacious (rare in Paris!) and very clean. I highly recommend staying here. You will, too, once you look up from the couch and see the Eiffel Tower sparkling.