If you're looking to stay around this hip area, I would suggest this location and place.
This area is where a lot of the young cool people go and hang out. Many bars, a lot of restaurants, a lot of cool alleys to hang out, visit, walk, but mainly get to see an area that is not so touristy and where a lot of the locals live. This felt like a true Roman local stay. Not your average tourist stays but enjoys it like a local.
You're about like 10-15 walk from campo de Fiori and the Jewish ghetto.
While it's in a happening area, the building is pretty quiet and next to many local stores and restaurants. Few min walk from the main area of Trastevere. Good spots everywhere and young people everywhere!