Marc is a friendly, honest, and respectful host. He really wants you to feel comfortable and happy and emphasizes that his one rule is for you to feel at home during your stay. Although it is several flights to walk up to the flat, most Paris flats are walk ups, so that shouldn't be a deterrent. The flat is in a neighborhood with lots of shops and close to several metro stations. Marc just got a brand new bed for guests, so the bed will definitely be comfortable.