I stayed at Marie's place with my in-laws during the Paris heatwave. The heat was unexpected, but Marie did a lovely job providing powerful fans to keep us cool. It was also nice and naturally cool in the basement, so we enjoyed relaxing down there. Her place is perfect for two couples or a family because of all of the space and the two bathrooms. We were able to save money in Paris by cooking dinner in well equipped kitchen. Lidl was walking distance away, and so were several bakeries. We also had a lovely stroll to the Sacre Coeur. There is a nearby metro stop for the M4, but just be aware that the M4 is undergoing some renovations. I don't know how long they will be occurring, but it was closed on Sunday and closed at 10 pm at night while we were there. I suggest downloading the "Bonjour RATP" app to plan your public transportation in Paris. If we're ever in Paris again we'd love to stay with Marie!