Alexia is very friendly and welcoming host offering to stay in Paris at her artistic and lovely pied-à-terre.
The app is on the 4th floor. Totally ok for us, but one should be aware.
Proximity to many museums. Louvre is a mere 1.4 km away. Pompidou Centre, Galleries Lafayette, Palais-Royal, Musée d'Orsay, Sacré-Cœur etc.
On a nearby tiny rue du Nil one can find a beautiful Boulangerie,a little Poissonnerie across with exceptionally fresh oysters and other seafood.
bottle of Muscadet or Sancerre at Nicolas and you are all set for a splendid lunch. Ah, joie de vivre in its simplicity and freshness.
Ok, not so nice pleasantries, yes, like in many big cities, in Paris too one can find not so great areas, I would recommend avoiding Gate du Nord area,I would avoid walking Nord-East, especially in 10th and 19th arr..
If you are lucky enough to have lived(been) in Paris as a young(or not so) man, then wherever you go for the rest of your life, it stays with you, for Paris is a moveable feast.