We stayed at Catherine's appartment for a week. The appartment is nice, however a bit too full of stuff from the owner (weird religious portraits and statues, etc) and not too clean (the cleaning lady just does a quick sweeping on main visible areas). The location is ok considering it's close to the Ile de la Cite, however, it is surrounded by prostitues clubs, and the entrance is on a narrow passage, which is used as a public toilet, so be aware that you'll have to pass through some smelly drips to get there. As a host, Catherine was a quite bad one. She never recieves her guests, as it is announced in a little paper on the kitchen ". She also managed to be quite annoying, sending text messages every day reminding how we should water her plants, and repeating that the last day we should leave before 11am so that the cleaning lady could "do" her job. Wouldn't go again, or recommend it.