Good location right by a Madelene train station (The opera house is close). The host was responsive when the autolock would not lock (took 30 minutes to send someone switch batteries and reset around 10am in the morning).
However, the autolock was a problem. It is Paris, so it was fairly safe but seeing as our group of 4 females ,it stuck out at us. The first night the door was gapped open as we did not push against the door to make it aligned. The other days, it did not autolock as described but it likely was due to the dying battery.
It didn't feel that secured for a locked door, but you do have to go through the main lobby downstairs and an elevator so overall it wasn't "unsafe"
The place has peeling walls near bathrooms and in corners. There are 2 showers and 1 toilet. The toilet is in a closet. 1 of the bedrooms was damp constantly from the bath inside. Good value but felt like a place to sleep. WIFI was fine.