Our hosts were very responsive, which we appreciate. We only asked for 2 extra towels (there were 4 in the unit) during our stay and it was brought right away. We didn't ask for anything else during the 6 nights we were there. There were 4 of us who stayed: 2 adults and 2 kids. The place is small, but I believe most apartments in Paris are small so it's pretty standard. It is ok for the 4 of us, but I think it would be perfect for 2 people.
The location is great, as it is within walking distance to a few metro stations. The hooks for coats at the entryway was great for hanging our items to keep them organized and out of the way, but still very easy to access. The shower stall is the size of a telephone booth. But there were plenty of surfaces in the bathroom for us to put our stuff on, without getting wet or being on the floor.
We didn't use any of the appliances, so I can't comment on them. But there was: microwave, tea kettle, toaster, stove, oven. I think there was also a coffee maker, but we didn't use that either (there are great cafes within a 3-minute walk). The neighborhood itself is quiet and we felt safe.
The sofa bed made a lot of noise whenever we moved. It woke up everyone whenever we turned/repositioned on the sofa bed. Though I'm not sure what can be done with the sofa bed other than replace it. The flat sheet on the sofa bed was too small to completely cover it. The curtains were missing some clips to hang them, but this is just cosmetic. One of the drawers in the dresser is missing a bottom, so we couldn't use it. The unit could have used another shelf/surface to put our things on, perhaps above the dresser, so our items are not on the floor all the time. Again, this is speaking from a group with 4 people. The pillows could be better; the pillows for the people sleeping on the sofa bed were 2 square throw pillows that were put in pillowcases, not actual bed pillows. The unit would be great for just 2 people, but just ok for 4 people.
Overall, the apartment gave us what we needed: a place to sleep and shower. It was clean enough and served our needs.