This is a lovely place to stay: full bathroom, comfortable bed (firm, but I like it that way), good closets and cubby holes to store belongings, good kitchen and a washer/dryer for longer stays. And, it's in a great location in Paris: metro stops within a few blocks; fruit and veggie markets, as well as a full grocery store, and bakeries in every direction; small and large cafes and bistros of every price point, also within walking distance. Penj, the owner, is very responsive and helpful.
The only caution I would give is for those with any physical limitations, especially if you are traveling alone: there is no elevator and getting to the apartment requires going up two flights of winding stairs. Getting my suitcase up and down was a bit of a challenge.
Otherwise - fabulous!