We loved the neighborhood--walked easily to Notre Dame, Louvre,
Tuileries, Musee d'Orsay, and everywhere else. Host was very helpful.
There were five of us: one grandmother (me, 75, didn't mind the walk-up
to apartment at all); two parents; two children (ages 11, 8). Apartment would work
better for four than for five, as it's good to have a dedicated space that doesn't
have a bed in it.