Wonderful stay in Montparnasse. Kat was warm, welcoming and wonderful--and helpful. Super quiet flat, just enough space for 2 to sleep and chill; much better than a hotel! Great neighborhood with superb boulangeries, restaurants (simple and extravagant), great Metro access. Our first AirBNB experience was fantastic--it won't be our last. Only suggestion would be improve WiFi in the flat--it's kind of weak/sporadic. Of course, that is solved by a short trip to Starbucks (2 blocks away).
Would entirely recommend Kat's place! Merci beacoup!