We (four adults and one teenager) had a great stay at Nathalie's apartment.
We were blown away by how spacious the flat was, and how great the location is. Close to the major train stations (Nord, Est), a metro stop just outside and exceptionally good food/entertainment options within easy walking distance.
The steps certainly give your legs a work out, but for this sort of space in this sort of location, it was more than worth it. Thanks Nathalie!