I stayed at Veronique's apartment for about 3 months. The neighborhood is incredible. You have everything close: good metro access, beautiful pedestrian streets, and markets, restaurants, bakeries, etc. The area is safe and quiet.
The apartment itself is great. The heating is pretty good (except in the Toilette, where it gets very cold). The sofa bed could be more comfortable, but overall OK. I really liked staying here.
The one thing that was completely unthinkable, is that not only does the apartment not have wifi, but the mobile phone signal is terrible. Knowing I was going to be staying for 3 months I reached out to the host 4 months before my arrival and asked if it would be possible to install wifi (I offered to pay all installation costs and monthly costs). They said no, and suggested getting a mobile plan. I spent 70 EUR on a SFR plan, only to find out upon arriving that they had no signal. I bought another SIM from a different company: no signal either. Quite frustrating.