I stayed for a week at Théodora’s apartment in the 18th, and I cannot recommend it enough. As someone who knows Paris very well, I was initially unsure about the area. However, the surrounding streets are delightful and the apartment is situated moments away from multiple supermarkets (including bio/organic stores), as well as markets and some great bars and restaurants. You are also only moments away from several metro stations, making the whole city extremely accessible.
The apartment itself is lovely, spacious with a well-equipped kitchen, bedroom, living room and bathroom. I stayed alone and was impressed by the number of amenities available to me which were not listed on the ad (such as heating, kitchen supplies, and towels). Furthermore, I would say that the photos really do not do justice to the charm of the apartment.
Théodora’s instructions for check-in/out were extremely clear, and she was always responsive during my stay. I would not hesitate to stay here again.