If you would like to stay very near Montparnasse train station (either to take the train to certain destinations, or to catch an airport bus), I highly recommend Hotel Miramar. Reasonably priced, clean and friendly. Everything works (and just once, when that was not the case, the hotel had the problem repaired very quickly!) I was so pleased to find such a welcoming "home" in Paris that I stayed there on two different occasions. more