We had a very nice stay at "Together", the location in the heart of Trastevere is amazing and the flat very spacious and well decorated. We were welcomed very warmly by Melissa as Ernesto was on holidays. The only negative point we could mention is that in some parts, the apartment was not very clean. Although it wasn't a disturbance to us, it could be relevant to other people.
All in all we can definitely recommend staying at "Together".