Clementine's spot is *superb*. It's located pretty much at the heart of the Canal St-Martin area, which puts you within crawling distance of a ton of great cafes, restaurants, and bars (if you're feeling lazy, you don't even have to cross any streets to get to these -- there's a decent place right next door called Medüse). Bonus: although you'll be in a buzzing neighborhood, her place is pretty quiet, as it's tucked away in a courtyard.
The room is lovingly decorated, quite comfortable (plenty warm even in frigid January when I visited and the bed is soooo comfortable) and Clementine was super helpful with advice on events to check out. That extended even beyond my stay in Paris -- I was headed to Iceland next and it turns out she had lived there for a year and a half, so she gave me some awesome tips on what to see and do there!