We had a very nice stay in the flat. It has been renovated recently and is very functional. The bed is good quality and the bedroom quiet and spacious. The bathroom is very recent and everything works no problem. The flat was clean and the owner provided everything we needed.
Our stay went very smoothly, and I would highly recommend staying there and I would definitely go back there myself. Testaccio is a lovely neighbourhood, and the flat is central: it is located on the main square and the typical market is only minutes away. Don't hesitate to book there!