Room was on the ground floor with a large window opening directly onto a fairly busy road. The window was broken and you could easily open it from the outside with a simple push. It is not obviously not secure for a room in Central Paris.
We decided to leave the air bnb and stay at a hotel; owner did not apologise and was rude in following text messages where he complained about having to wait on hold with air bnb on the phone to ask for a refund. He tried to get us to call Airbnb and ask for the refund despite this being the responsibility of the host according to air bnb. A full refund was received in the end and a £20 compensation from air bnb for the issues caused. No apology received from host.