This is a great apartment just minutes from the opera and the metro station. There's a bus that goes from the airport to the opera so it's an easy trek if you're flying into CDG. There's plenty of good food nearby including the Japanese district with great ramen; there are also plenty of boulangeries/patisseries to choose from.
It can be a bit noisy with the windows open but much better than a lot of city apartments we've stayed in. The noises don't really pick up until people start heading to work--so not ridiculously early. The view is also nice; plenty of room to wake up to fresh Parisian air in the morning.
Our only issue is that It was a bit of an adjustment getting used to the small shower (which of course is pretty standard in Europe). It wasn't bad, just not as luxurious as American showers can be.