We had a lovely time in Rome at Ingrid's apartment:

The apartment:
The room is comfortably appointed and has a strong wi-fi signal. The wi-fi itself is also quite fast. The room has all the basics including an AC. The bathroom is a bit tiny, but pretty normal by european standards. Ingrid was very welcoming and on arrival gave us a good orientation of the area and restaurants nearby. She was also responsive and very helpful.

The location:
As the listing says, its truly the heart of Trastevere. Fantastic location. I could have almost literally jumped from the window directly into several great restaurants and bars. As noted it also gets very loud, especially during weekends. On Saturday expect noise till 4am. We kept the windows closed and used the AC occasionally for some white noise.
We spent many evenings just walking around Trastevere, and finding great places to eat and drink was never a problem.

The apartment is a very short 10 minute walk to Campo De Fiori, and onwards to the Pantheon/Trevi fountain/Spanish steps. It's also on the tram line, and has a direct bus to the Termini station. There are also direct buses from there to the Forum, and also to St Peters/Vatican city. Moving around was never very hard.

Since Trastevere is a maze the apartment might be a bit hard to find initially, but we had no problems after the first time.