Pierre's studio is compact and in a great location. My partner and I along with our nine year old stayed in July 2022, and the studio was everything we'd hoped it would be. Terrific location - two Metro stations are within a few minutes walk, supermarket is down the street and there are lots of eating options at a stone's throw. The apartment is on the ground floor, so there's no need to climb stairs with luggage. The best thing is that it's within 20 minutes walk from the Eiffel Tower.
The apartment isn't too big, but will work well for a small family. There's a small kitchen, clean bathroom and the host had thoughtfully provided a standing fan which was very useful given the heat wave when we were there. The only word or caution would be that the neighborhood could get a bit rowdy in the nights - we heard a mugging one night when we were there - but otherwise, it's the perfect place for a small family to stay in Paris for a few days. Thanks Pierre!