We had a comfortable stay in this lovely bright, homely apartment. It is out of the city centre but that's what we liked about it. You get to experience 'real' Rome.
It is up a big hill but the local bus links are very good to all the main points of the city and run until midnight. If you are OK walking you can walk into the centre. If you walk from the apartment to the Vatican you get amazing views of Rome.
The apartment itself is very secure and the area feels nice and safe. I'm pleased we chose to stay in this area.
Only thing to note is that Rome is a city so there is noise as with any city! The apartment doesn't have double glazing, there is a nursery outside the apartment and you get the noise from residents coming and going in the apartments. So if you are a light sleeper ensure that you pack earplugs, but that is the same anywhere in a city.
Carlos was a good host and helpful. He organised somewhere for us to leave our bags on the last day so we could enjoy Rome before catching our flight.
If you want a nice place to stay in Rome. This is it!