After traveling through Europe for almost 60 days, my girlfriend and I booked Sophie's apartment in Montmartre for our final visit before returning stateside. I can say, without hesitation, that this property enormously exceeded our expectations and stood out as the most enjoyable property of our travels (hotels, multi-party BnBs, and aparthotels included).
Location - If you are unfamiliar with Paris, rest assured that this location is unbeatable. It is 50 feet from bend of a boulevard lined with historic cafes, clubs, and bars. Rue des Martyrs is a main artery for pedestrian locals and tourists visiting Sacre Couer, also lined with wonderful boutiques and cafes. The Pigalle station is easily accessible for seeing the rest of Paris and not difficult to commute from with heavy luggage.
Apartment - The property is exactly as shown in the photos, just as impressive and stylish as pictured. Sophie supplies a list of requests that essentially amount to "please respect the apartment so that future guests can enjoy the same experience", and we were happy to comply. The bathroom and shower were large enough for me (6'3") with room to spare. We cooked each night with Sophie's nice appliances and kitchen supplies. A dishwasher and washing machine made life easy for cleaning up. The design of the built-in cabinetry is smart, innovative, and extremely efficient. We slept each night with a window open and, despite our proximity to a highly energetic neighborhood, never heard one disturbance day or night. The wifi was very fast and adequate for Skype or streaming a movie via iTunes.
Host - Sophie was quick to respond to any question we had regarding arrival or apartment logistics (e.g. trash disposal), usually within an hour or two. Her colleague Julie greeted us upon arrival and was quick to offer her contact info if there were any problems. Sophie has high expectations for her guests because the apartment was recently remodeled, but at the price she is charging your should have no problem observing a few "house rules" to keep the place in good condition. This apartment was the best value, hands down, of any place I stayed in Europe. I highly recommend Sophie and this apartment for any guest looking for a clean, tame property to call home during a visit to Paris.