I took a French class (it was at Accord Langues about a 30 min walk away) for two weeks in Francine's apartment. The stay was great, there are two metro stations close by (with access to line 8 and 12, also a bus stop for bus line 39 (which you can take to and from gare du nord incase you are arriving there). There is no washing machine, but several "laveries" close, I recommend for example Laverie Wash'N Dry. Other recommendations include an excellent bakery "La Boul'ange", also very close with fantastic baguette and pastries.
It was mentioned in another comment that it smelled of food in the apartment. This was not at all the case during my stay. There is a nice balcony with a table to have meals outside in the sun. The kitchen is small but equipped well enough for cooking simple meals.
Francine is very kind and answers any questions promptly. The building and location themselves felt very safe, which was important to me as I was traveling alone. There was also little noise at night even with the balcony door ajar.
Overall great stay. Thank you, Francine !