This is a fabulous place to stay.... I loved it. Rachel (the host) is very helpful but not intrusive at all. The studio apartment is very clean and comfortable, and very warm in winter. It has a charming view. It's very small, and therefore best for one person (or a couple for a few days). It's extremely close to 2 metro lines, there is an excellent market outside in the street 2 days a week, and it's in a very beautiful neighbourhood and easy to walk to the busy areas of the 6th and 7th arrondissements.
I highly recommend this place!