We travelled as 6 adults and one child (5years old).
The Hotel was very clean,breakfast was ok, beds were very comfortable, staff were very friendly, especially the staff at the reception desk were very helpful and kind. The only negative thing we experienced was the rudeness of the man who prepared the breakfast. But our general impression about the hotel was good. Its location is very easy, just opposite to metro station! In Montparnasse station(2 stops far from the Pernety station, where the hotel is located) you can find very good restaurants. You should follow the 5th Sortie of Montparnesse metro station.
We would definitely stay there again !