Juliette's flat is very small but comfortable nonetheless.
The area is great, very close to the Canal St. Martin with a great variety of cafés, restaurants, shops and supermarkets.
Metro stations (eg République) are in walking distance. Gare du l'Est (10 min walking distance) and Gare du Nord (20 min walking distance) are also close by.
Juliette herself was very nice as well.