I stayed here in June with a friend while on a month long trip around Europe. The facilities were excellent: free wifi, and two desktop computers also connected to the internet that were free to use; a kitchen, which lacked a proper oven but had everything else you could possibly need; the bathrooms were clean and very nice; there were plug adapters available to use if you didn't have one with you; lockers in the rooms are free to use, and have the lock built in, so you don't need to take your own padlock; the hostel in general was clean, well decorated there is a supermarket and some restaurants very nearby so plenty of places to eat if you don't want to travel more into the centre; it is within easy walking distance of the main train station (even if you are carrying heavy backpacks!); the metro station is also at the train station and can take you into the centre of Rome quickly.
It was also very good value, especially considering how modern and clean it was. You do have to check in at a hotel across the street, but they do tell you this in your booking confirmation email or on the website when you book (I can't remember which). It is also a few floors up, you can take the stairs of course, but there is also a lift, even if it is a very old looking lift, it kind of adds to the charm. Although the lift is kinda small so if you have huge backpacks or suitcases I guess you might have to go one at a time, but this is hardly a huge problem.
Basically, its probably the best hostel we stayed in on our trip and I would definitely return if I was travelling to Rome with female friends again!