The location is top notch! Everything you might need is nearby. Geraldine is so kind, we used English to communicate, but I wish my French were better so we could've had more in-depth conversations. She seems fascinating. She stayed at her boyfriend's house the two nights I was there, otherwise I think she would've slept on the couch.
A couple things to note: the listing shows photos of the shower, but not of the toilet, they're in separate rooms. The water closet is absolutely tiny, as bathrooms in many European cities are, and less sleek.
My biggest concern was with the lack of curtains in the window by the shower, though I fixed that using a towel as a makeshift curtain so the neighbors wouldn't see me. The door that separates the shower room from the rest of the flat also has a window, which wasn't a big deal because I was alone. But had Geraldine been there during my stay, I would've felt weird asking her to stay in the kitchen for privacy.
Also make sure to ask Geraldine to specify which door to knock on when you first arrive! She told me which floor she lives on, but if I hadn't asked about the specific door (I don't recall them being numbered), I could've easily knocked on the wrong one.