My family (partner, plus two young kids) spent a wonderful six days here.
The apartment's roomy and authentic. It's very well appointed. It's in an amazing location close to a few metro lines. There's a small park nearby and the famous Place De La Republique. A couple of local grocers and many cafes and restos to pick from are just around the corner.
I would highly recommend it. The wi-fi can be a bit spotty but I don't know if that's terribly uncommon for Paris.