There is definitely a walk up stairs (from Ave des Aples) or down stairs (from Ave de Belmont) just to get to Franziska's place, but it is well worth it. Wonderful apartment. Very well lit, open, and airy. Furnishings are perfect. Not empty feeling or over crowded. Very clean. Plenty of space. Bathtub/shower drains very well. Bed is comfortable.
Franziska herself is very friendly and easy to talk to. I only wish we had planned on staying longer. Will without hesitation be back if in the area.