I really cant say what is the best part of Elise's flat. She's a great host, willing to share all her knowledge about Montmartre and Paris so you can enjoy it. Also, the flat is amazingly nice and (unexpectedly) quiet, and its location its unreal; only by walking out of the door you find nice restaurants, galleries and all the nice things of Montmartre. Also is close to bus station and Metro stations, so, definitely is a place to choose when thinking on visiting Paris.