We loved Antonin's AirBnB in the 14e. It was relatively large, clean, well equipped, perfectly quiet, and was a great location to either walk (40m walk to the Seine) or take the metro or RER B from (4 lines were close by and the RER B, which goes to and from the airports, was a 10 minute walk).
The 14e area around the AirBnB was fantastic in itself. Rue Daguerre (3 minute walk) was a nearly auto-free street filled with shops and restaurants. Rue Gaité (5 minute walk) was filled with theaters, cinemas, restaurants, and shops. We highly recommend walking 20 minutes to the Luxembourg Gardens and relaxing there along with the Parisians.