We loved our 3 night stay in Paris in Elodie's apartment and the neighbourhood was perfect. The flat was a bit rough around the edges and in need of a bit of tlc but we had everything we needed and the street was quiet. My main criticism were the workmen in the next door apartment who made a *lot* of noise on our first morning, less so on the other mornings.
The local area had a great vibe. Restaurants, bars, shops, public transport, though we mostly walked everywhere. I loved the proximity of Sacre Coeur and Montmartre, and the cemetery was an expected bonus.