Hélène is a magnificent person and a wonderful host. I know you may be looking at this Airbnb and thinking: "This has a great price and location, but I don't like the fact that it's a private room instead of an entire appartment!". But trust me, for this price, I don't think you can get anything better in Paris. With Hélène you will never feel you lack privacy and you'll even often feel that you have the entire appartment for yourself. I stayed two nights with my wife and we both felt entirely comfortable.
The location is great and you can get downtown by simply taking a bus or a 15 minute metro ride. If you're coming to Paris for a concert at Accor Arena (like we did), this is easily the best place you can ask for. The place is really clean and Hélène is very flexible with you using her house's commodities. When you do run into her, she will always have a smile on her face and be one of the friendliest Parisians I have ever met.
This was the best "private room" Airbnb I've been to.