I have enjoyed Juliette's place very much. It's fairly close to the downtown area (even by foot if you like walking). It won't take you more than 20-30 mins to reach the Louvre, down the beautiful Rue de Rivoli. Multiple metro stations are 5-10 mins away, which makes it very convinient to reach any other part of the city. The neighbourhood is packed with different restaurants and cafes, so you don't need to walk far or even use any transportation if you want to grab a drink or a dinner in the evening. 11th district is very vivid and alive, but the apartment itself is very quiet as it's overlooking the internal courtyard. Juliette was very responsive and I would highly recomend stay in her cute and coazy apartment.