The communication with Audery and Jonathan was very easy. They replied within minutes. There is a code that they will give to you for the door and then a key that you can take with you.
The room itself is clean and has a very comfortable bed for you to sleep in. The window goes to the backyard therefore you hear no street noises!
The location is great: Short walking distance to Gare de L'Est and also possible to walk to Canal St. Martin in about 20 minutes. There are also bars and restaurants right in the street of the apartment.
You get exactly what is written in the text: A room in a big shared flat. So be aware that bathrooms have mold in them and are not very clean. But for everyone who has lived in a student flat, I guess this is no problem for a couple of nights. At least it wasn't for us. During one of two nights there was really loud music playing in another room - but again, nothing unusual for a bigh shared flat.
Jonathan and the rest of the flat mates were really nice and offered us company and beer. Unfortunately we had other plans that night.