We had a fantastic stay. Their flat is excellent for easy access to and from CDG airport and to public transport. The location is a bit "gritty" as you're near the Gare du Nord station but you will likely be out and about all day. There are several markets nearby and good dining all around Paris. Yes, the flat itself is up 5 flights of stairs but once you have your bags up there it's not a problem. The bed is super comfortable, the shower is excellent, and the kitchen small but functional. We absolutely recommend their flat for a great stay in Paris.