Great place for great price! We took the bus from FCO to Termini and walked from there, could not have been an easier trip which is exactly what you want after a 12 hour travel day! Our room was being cleaned when we arrived, so we grabbed a quick lunch around the corner and were able to check in an hour early.
I don't think the bed is a king size, but it is definitely queen and still very comfortable. The shower did not get super hot, although we were there in March when it was uncommonly cold. Gael was super responsive and we would definitely stay again.