As two families meeting up in Paris, we had a great stay in this apartment. We filled it to the max (4 adults and 8 kids ages 6-12) but it was still completely functional. Location was amazing; just steps away from Notre Dame. Louise was helpful and quick to respond anytime we had a question. The apartment was clean and neatly decorated. I wouldn't recommend 12 staying in the apartment unless some are small children (two of our kids slept on the couch that was re-arranged into a bed, leaving no "common room" for adults to stay up), but it worked great for our kids, who are best buddies. We ate breakfast at the apartment before exploring for the day. Louise was even flexible and let us drop off bags early, and leave them an extra hour on day of checkout. We would all definitely recommend this apartment to friends!