I recently took a group tour that started at this hotel and believe I have reasonable expectations of European 2 star hotels. I've stayed in all sorts of accommodation and am not too precious.
Now, the suburb is not 'dodgy' as some people have said. It's a normal, working class suburb - not unlike any other around the world. But as a tourist, to have to wait for a bus to get to Cornelia underground, then a tube ride to get anywhere, is wasting time.
The staff seem to be very stupid and most unhelpful. My roommate and I locked our door to find out we could not exit the room in the morning so had to call for help. We were told off by the staff for having the nerve to lock the room! Our safe was broken and my attempts to have staff look at it were fruitless. Asking any assistance of them, like where to find an internet point, is just too much hard work for them.
The carpets were utter filth. My nose was instantly blocked and the stench can only come from carpets that are vacuumed twice in ten years. It was unbelievably gross. Terrible for those with allergies.
Tour groups take this ^%*pshack because it takes large numbers, but I would avoid it at all costs.
When in Roma (or anywhere in Italy) stay in convents or monasteries. Spotless, premium locations (really!) and cheaper than these gross hotels that would die without group tours.

Stayed here two nights at the start of my tour - it's so far to get here, almost to the end of one metro line *and then* a bus... Hardly anything around nearby to go and eat (and it's all shut on a Sunday) and the suburb is very dodgy. Hotel rooms are OK, but nothing special.

stayed here with a tour group, our a/c would make a "knocking" noise when turning up to high speed. house keeping staff had stolen a few personal items from drawers, at the end of our tour group's last day, 1 of our fellow travellers had their bag stolen from the lobby. we highly suspected the concierge. Do not ever stay here, it is not located in a safe area, there are no restaurants or bars surrounding it.

PROS:
- I cannot think of anything positive to say about this hotel
CONS:
- located a bus and train ride from the centre of Rome
- the carpet in the room was filthy
- the room was incredibly hot...no air con...the best reception could recommend was sleeping with the window open
- we stayed here with a tour group and reception didn't seem to be able to cope with the room requirements - a couple got a quad share room, yet the people requiring a triple were told there were none and they had to split up