I was met punctuality by a friend of Sabrina's. She gave me a map and showed me the room. It was clean and neat, as described. The sink was a bit broken (the faucet was loose where it was installed), but worked fine. I found the location a bit less convenient than I would have hoped; there is no metro nearby, though I found you can walk to the Pyramide station in Testaccio if you have the energy. (It felt a bit unsafe to do this at night, you have to cross a bridge in an area that is a bit empty. I did like that it got me into Testaccio where I found some interesting restaurants.)