Pros: Comfortable bed within a large (for Paris) cute/cozy apartment. The pictures are a good representation of the space. Great communication by the host. Easy check-in/out. The Nespresso made great coffee. My wife loved the little balcony. Decent grocery store quite literally across the street. Near metro stations.
Cons: Biggest issue, is this apartment is on the 5th floor (referred to as the 6th floor by Americans), and the lift was broken (and from the posting on it, had been broken for over a month). No AC, which was specified in listing, but also no fans provided. Was comfortable, but forced you to open the windows at night. The noise of people coming in, echoing up the courtyard was quite loud. Also, major renovations ongoing within other apartments; don't expect to sleep past 830.
Host should update listing to specify no lift until repairs complete. I would recommend apartment after lift repaired, but not before.