Dario is a very helpful host. If you have a problem, I found that he is very flexible and quick to respond. Make sure to pay attention to all the important information he includes in the rental listing and in the messages he sends you.
The location is nice because it is away from the touristy areas, but in walking distance to almost everything Rome has to offer. The neighborhood has a lot of restaurants where we saw pretty much only Italian residents dining. There seemed to be a lot of local Italian young people walking around and having a good time late into the nights.
Having air conditioning at night was really nice during the recent July heat wave.