Some strong positives: the apartment is well-located to explore Paris and enjoy the excellent food and social options around the Rue Mouffetard/Jardins des Plantes area . It was very clean, with two excellent wet rooms/showers, fluffy towels, good bed mattresses, super broadband and TVs in all rooms with Netflix/Amazon Prime, etc. Being on the ground floor, it was easy to access and navigate with luggage. Suits a family of 4 for a short stay but may be a little compact if more people.
An issue for us (July 2022) was heat & noise management that is likely to be a challenge in the summer months. The apartment layout is long & narrow (I believe formerly a shop re-designed to residential purposes). When warm the windows need to be opened to move air through apartment (there are good shutters that can be closed/locked to ensure secure), but normal living noise from other apartments facing into the shared courtyard then comes in. Noise was also a challenge in the morning when windows were open as the communal bins are located in the shared courtyard immediately outside our bedroom windows (including glass recycling which occasionally smashed when dropped in the bin). In our experience of Paris, communal bins are usually located where residents are not disturbed (such as a utility or garage area behind a closed door), so this is unusual. Nevertheless, both heat and noise management can probably be addressed by providing fans to circulate air when the apartment becomes warm.
A minor item was the bedroom pillows that being large, firm and square were uncomfortable for sleeping. These can be easily replaced and I suspect will be in due course.