We had a lovely stay in Katia's apartment. It's a beautiful space with everything you could need, even house slippers!
While it's a bit noisy you can't beat the location. The Marais district has some lovely cafes, unique shops and the best falafel you have ever tasted! Katia also gave us some great restaurant suggestions including a little place we would never have found, which served up the best meal we had in France. Would definitely recommend it.