Antoine's studio is the perfect place to stay for an immersive experience in Paris. The studio is in a nice, quiet neighborhood with many local restaurants. There's a fantastic bakery near the studio, where we went for breakfast on many days. There is also a pharmacy and grocery store nearby, if you need supplies.
Antoine's studio is conveniently close to the Jacques Bonsergent Metro station. It was pretty easy to get to the studio from Charles de Gaulle airport (RER B to Gare du Nord, then the 5 to Jacques Bonsergent). The studio is also a short walk to the Republique Metro station, where you can get a number of other Metro lines.