This apartment is located right next to Gare du Nord (5 min. walk), which is very convenient if you will be using that station often...or just the metro in general.
The room is a really good size with a lovely window / large bed. You do get your own private W.C. and shower room too (they are separated). The apartment itself is very beautiful with a lot of light.
Didier was a gracious host who responded quickly to messages, let us use his washing machine, and even helped us with a small printing task. He was friendly and offered local advice, but we didn't interact that often. I would say we had a fairly private experience.
I would recommend this listing for sure. You may think it's "out of the way" from the main tourist attractions, but it's very very easy (and fun) to use the metro and to just walk in Paris. Keep in mind this is a big global city, like New York City or London, so it's good to be mindful of surroundings, but overall I felt very safe in the neighborhood -- with or without my boyfriend with me (and the building itself is VERY safe / secure). Merci, Didier!