Four of us (three adults and a baby) have just visited for the weekend, and had a fantastic stay. Excellent location - short walk to the Gare du Nord, and not far to the river/Notre Dame etc, and Sacre Coeur, Montmatre - and well presented apartment. Good size, modern decoration, and set back from the street.
You do need to have a set time to check in / check out to meet the owner, which might not suit everyone.
Can thoroughly recommend.