Great location and Piera is one of the kindest hosts you can find. You will have all that you need at her place (you will really hate yourself if you don't find a room with air conditioning in Rome during summer) and she was very responsive and adaptable to our needs.
The only potential downside would be if you're a very light sleeper and the people on the room next to yours are loud. The walls are a bit thin, but fortunately, this wasn't a big issue for us.