This apartment worked out great for our family of four. Each bedroom easily accommodated 2 of us, and the living area was comfortable and clean. The location was convenient to the Metro, an easy walk to Sacre Coeur, and a few steps from a groceries and pâtisserie (in addition to other restaurants, etc). Also a modest walk from Gard du Nord, which made getting there really convenient. We also appreciated that the courtyard outside the apartment door is actually behind a door secured with a code. The area seemed just fine, including when we walked back from the subway near midnight on several evenings. Still, it never hurts to have an extra bit of security.
Alexandre was helpful and accommodating, allowing us to change our checkin time multiple times when our travel got disrupted due to several travel delays.