For our very first trip to Paris, my boyfriend and I stayed here and weren't disappointed! Antoine's place is in a cool, old building in a convenient spot at the tip of Luxembourg Gardens. Truly an ideal location for exploring the city. Safe neighborhood with plenty of cafes and grocery stores nearby. We walked a lot, but you're close to the RER station and bus stops.
The place itself is cozy, with everything two people might need for a home base to explore the city. Big windows, a tidy bathroom, cool art. The washer/dryer was super helpful. The kitchen is small, and we didn't do any cooking but did have breakfast and coffee there. (FYI, the flat is up several flights of stairs, if you have mobility issues.)
Antoine made check-in and check-out easy, despite the fact that I don't speak much French. He left handy suggestions for local restaurants and his instructions for the keypads were clear. Merci beaucoup, Antoine!