Helene is a very kind and generous person. Her place is very nice and cozy with her pesonal touches. She has a lot of hints and written information about staying in her flat. She provided for all our needs (TV channel guide was very helpful for tourists like us). As for the location. we cannot ask for more in Paris! Getting here from CDG was easy and the one direct line (RER B) was convenient also for going back to the airport (about 1 hour).
We can walk to Jardin du Luxembourg, Blvd St Michel and St-Germain des-Pres and Nortre-Dame (Sorry about the Notre Dame fire, that happened a few days before our trip. Also, we had a great weekend despite the "Gilets jaunes"). She gave us tips in advance to avoid it. Wonderful host and we will definitely come back.