Very nice, clean and basic place with interesting interiors (a bed that can be pulled up and down from the ceiling to save space). Very good location (5 mins away from the Bastille metro). I felt safe all the time since the building has many layers of security.
Alix was nice and friendly. She even provides you tips about restaurants, bakeries and pastry shops.
I highly recommend this place and will definitely stay here again the next time i'm in Paris.