Fantastic apartment that comfortably slept my family of five. Two separate bedrooms (queens in each) with a comfortable pull out couch in the living room. Madeleine Metro station is less than 1 minute away, with access to other Metro (subway) stops at Auber, Opera and Havre-Caumartin within a 5-minute walk. Concorde Plaza, the Louvre, Champs-Elysees, Rue de Rivoli, National Assembly, Musee d'Orsay, Grand Palace all within a 10-15 minute walk.
A few restaurants and cafes nearby, but definitely not a touristy neighborhood so if you want to be right in the middle of a hip, happening spot for nightlife, this isn't it. Neighborhood very clean, quiet, seems mostly residential with some retail. We felt safe everywhere we walked in the neighborhood and had no loud street noise to deal with - perfect for a family or travelers who prefer a quieter place to stay in the city.
The apartment itself is very clean, in a quiet building, with all needed amenities. Small kitchen (we ate breakfast in the apartment each day, plus late-night snacks) with a refrigerator, freezer, dishwasher and stovetop. Dishes, silverware, towels, sheets all were fine. Bedrooms had plenty of closet/storage space. TV easy to work - the kids loved watching some of their favorite shows in French each morning while we got ready for the day! There is a washer/dryer in the unit as well. We couldn't figure out the dryer, but washed clothes once during our stay and hung them up to dry, which was convenient and helpful. Building has a small elevator/lift, or easy walk up to the apartment on the fifth floor. Check-in and check-out was easy - Stanislawa (assistant to the owners) was wonderful to work with and very pleasant when we arrived. Her English is not great, but she was able to answer all of our questions and help us get settled. Overall, I would happily stay here again. The location, price and amenities were all just right for our family.
One last note - if traveling with children, recommend taking a taxi from the airport to/from the apartment. 50-60 Euros, much faster and more convenient than dragging bags on and off of trains and buses for virtually the same price. Taxis charge a flat rate for the ride to/from Charles De Gaulle, may be the same for Orly.