Chez Élise you'll find all you need and around there supermarkets, cafes/ restaurants, etc. Her house is just beside the Laumière station in the 19ème and near the Parc Buttes Chaumont which is amazingly beautiful. Be prepared for humble accommodations as the house is in old non-refurbished style but everything was working properly and we didn't have any problems with the house devices.
I didn't get to meet Élise personally, but she seemed nice and easy to communicate. As she was out of town she assigned her friend Guy to give us the keys: no words to describe how welcoming and considerate he was. He made our check-in just perfect.
thanks a lot dear Guy and Élise.