Remy's apartment is so great. We stayed with 3 kids and 2 adults. The location was perfect for our family - a few metro station options and great restaurants within walking distance. There's a supermarket within 3 minutes and a wonderful boulangerie right across the street.
Remy was a wonderful host. He met us at the apartment (early) and was very accommodating (he was totally fine with us leaving our bags and freshening up when we arrived - despite being very early for check-in!). Remy was also very helpful when we were leaving re: transport to the airport.
The only downside was no air conditioning. We knew that going in. While we were there Paris was under a very severe heat wave and the apartment surprisingly stayed cool. I imagine it's great when the weather is a bit cooler.
We would highly recommend this apartment to families our small groups.