Don't doubt. Just book it! We spend three night in this roomy, quite appartement, with 3 adults and two kids (2 and 4y). Emmanuel goes out of his way to arrange everything and makes you feel welcome.
The building lies in a quiet street in a lively and wonderful neighbourhood. It might not be the most central place to stay, but you really get a feel of the Paris life, without the tourist masses. And because of the Metro and RER close, no travel takes long.
We had the best time! If in Paris again.. We're coming back here!!