Nathalie's place is in a nice location and most importantly safe. If you are looking for an area to take it easy and enjoy your vacations, this are is perfect for that. You can walk to Notre-Dame (15 min walk), or walk to the one of the several small parks around the place and enjoy many little cafes and restaurants. You can also walk to the Place de la Bastille which has a little market on Thursdays and Sundays. Even if you want to go shopping you have the Bazar de l'Hotel de Ville which is also close. I will also suggest using the bus to get to the Louvre or the Effiel tower one bus takes you all the way there, the bus stop is really closed from Nathalie's place.