Clean and cute unit in a great neighborhood. It's about 24-30 mins into the center of Paris, though the neighborhood is worth exploring as there aren't many tourists in the area. It's also a short 25 mins to Montmartre.
Consider bringing your own shampoo + body soap + laundry detergent if you have an extended stay. Our sheets weren't fitted so they kept coming off every night which was a mild annoyance. Also, be prepare to walk up some stairs! So pack light. The unit is on, what Americans would consider, the 5th floor.