This is a lovely, nicely decorated apartment that is very comfortable to stay in; particularly for a family. It is quiet and peaceful. The small kitchen is reasonably well equipped and is allows one to have breakfast and cook dinner in the unit. While the building does not have an elevator the unit is 1 1/2 flights of stairs above the ground.
The apartment is located in the northern edge of the Marais; about a 15 to 20 minute walk from the central Marais described in most tourist guides. The nearby Metro stations provide easy access to major tourist sites throughout the area.
As other reviewers have noted, the area around the Strasbourg-St-Denis Metro area is a bit run-down compared to more central areas of Paris. The area appears to have been more of a working class/immigrant neighborhood at one point. Though it is now clearly in transition with many young professionals hanging out in the cafes and bars in the area and interesting new restaurants popping up (Restaurant 52 at 52 Rue Faubourg St Denis can be highly recommended).