We (two adults and two girls, 6 and 9), had a fantastic stay in the apartment. It's exactly as described, a great space and location to explore Paris. It's very easy to get to and to get around from. As a result the streets are quite busy and noisy but it depends what you're used to whether this would be a problem...
The kitchen in the flat is very well equipped and there's an excellent organic shop around the corner.
Aurelién was an extremely helpful, communicative and accommodating host, he dealt with a short notice need to extend our stay really well.
We would definitely consider staying here again if we come back to Paris.