The location was great, very close to the train station and in walking range (~30 min) to the main attractions (Colosseum, Trevi, Spanish Steps, etc).
We took this place because it was the cheapest option in the centre and it was more or less what we expected. The room was clean and the bed was comfortable.
The shared area was not so clean, but that also depends on the other guests, so that may depend. We only stayed for 2 nights and we were in the city all day, so we really just came in the apartment for sleeping. And for that purpose only, it was great.