I enjoyed my stay, the staff were really friendly and I felt pretty comfortable with my privacy. The location was perfect, easy to access everything and tons of yummy food around. Because its a nice hostel, there did seem to be a bit of a wait when checking in or getting help, but that's not really in their control.
My biggest complaint is that kitchen use and other amenities were listed that were not available. That is something that I was kind of disappointed about, I had to go to the bar to fill my water bottle, which they were kind about, but felt a little weird walking around in my PJs like that. Overall, would highly recommend for those visiting Paris with the caveat that the amenities are limited.