The thing that killed this hostel for us was that there was no heating, and this was in winter (early January!). They gave us thick blankets to help, but it's not a lot of fun freezing in your room. The bathroom was only ok; not the cleanest but tolerable. The hostel's also right at the top of the building, and the lift requires two 5 cent coins to work, and you don't really get 5 cent coins on your person often. The only internet access available was from the really really old computer at reception, and even then only at a certain time of the night.
I suppose the main redeeming factor is the proximity to the train station and the Pantheon. The staff were pretty nice too.