We had excellent experience with 8 days at Bastille area via Nina's place. It is very convenient to stay close to everything such as metro, Gare de Lyon, Marais, etc. just a walking distance. It is also in the area surrounded by many good restaurants and night life clubs but you can sleep with calm at her place. If you come from CDG, I recommend to take Air France bus no.4 directly from any terminal to Gare de Lyon and just 3 bus stops (no.61) or just walk.
She is very nice and advice us a lot. Thank you so much...