I would recommend this listing.
It's well situated. The front door is very close to the Daumesnil métro station, which gives you a straight shot at places like the champ de Mars, the Marais, the François Mitterrand Library, etc. You can get life necessities very easily. Around the corner are a pharmacy and Auchan, which is stocked well. Laundry is two blocks away. Monoprix hypermarket is also a short walk away.
Frédérique's apartment is good. It's easy to get in, no esoteric buzzer systems or camouflaged stairs. You are across a courtyard so it's kind of sheltered from street noise. Everything in the apartment is as described in the listing, and it's all in good condition. The bed is on a raised ledge, however, this compensates for the storage problem a lot of these apartments face, since there's a big closet.
The place was well provisioned with cleaning supplies and kitchen stuff. I stayed for a month and I had more than enough.
Nothing was off about the apartment, so I didn't have a lot of occasion to contact Frédérique. However when I did she was always easy to reach. Super friendly and was accommodating to me when I first reached Paris, ready with lots of information about the neighborhood. Merci, Frédérique !