Excellent location with close metro access to all over Paris, more importantly the neighborhood that it's located in is awesome, not touristy and filled with quaint bistros and bakeries.
The apartment itself is perfect for a couple and another couple (as long as the second doesn't mind two seperate twin beds) or a family with two children. The finishings of the apartment are very nice and it has everything you need for your stay even if you choose to cook. There is even an IMac for you to use if you forget a computer, truly JC has thought of everything! I wouldn't hesitate to stay here again for future trips to paris!