I spent a splendid month in Paris living in Marc-Etienne's studio. It is located 2 blocks away from the G. Pompidou Centre, at the top floor of a very elegant building. The window offers a view to Montmartre and to the Pompidou. It is comfortable and well equipped, and Marc-Etienne is a very nice and amiable host, always available and quick to respond to any question I had.
The location is perfect as it offers easy access to a wide choice of grocery stores, transportation options (including the RER station with direct trains to the two main airports), and a variety of cafés and restaurants for all tastes.
I highly recommend it for anyone who wants to have a unique Parisian experience.