I stayed here with my two almost teenage boys. The location is fabulous. There are a few bars and restaurants around - we even found a few breakfast places. There are several metro stations within an easy walking distance - and a bus stop even closer, so it's very handy get around.
The place is excellent value for money. You have very few good options in the price range. You are, however, renting an extra room with loft within the apartment (just as advertised). The room itself is nicely separated, but it's not a fully separate apartment. That said, at least we hardly spent an hour awake in the room, since we were enjoying Paris from dusk till dawn.
The room itself is very nice with everything you need. It easily sleeps the advertised family of four. I can definitely recommend this to everyone! And Paris, too. Regardless if you're having a romantic getaway with you missus, a cozy weekend with your offspring or night on the town with your mates, Paris is an excellent choice.