We were a family of 6 (2 grand-parents, 2 kids and us) and had a truly delightful stay in the apartment. The metro is so close, it is easy to get there by RER from the airport CDG. A nice guy was there to welcome us. A nice girl from the agency could always be reached and was helpful when we had questions. The apartment was clean, spacious and perfect for families (high chair, buggy, some toys). Several bakeries and a supermarket are 1 minute from the apartment.
For the checkout the guy from the agency did not show up on time, but we were advised to just leave the keys. So this was not a problem. Thanks for a great stay (just the weather could have been better :-)