Laurents apartment is in a great location in Monmarte, close go bars and restaurants, and the metro is walkable in 10mins. 5mins walk to the sacre coeur.
Communication with Laurent was fine, he wasn't there when we got to the apartment but instructions were clear as to how to get in.
The space was fine for four people but I think any more than that it is a tight squeeze. All three of the beds are sofa beds and comfortable. There are a set of stairs that are a little treacherous, but fine if you are careful.
The apartment was very clean and tidy, and decorated to a high modern specification.