I would strongly recommend booking with Sergio and his team. the location of the apartment is 10mins away from a major train station, 10 mins walk to the colleseum (my walking speeds) close to cab stand and in a neighbourhood full of great affordable places to eat. The unit felt comfortable and safe. Located on a well known street, just an example cab fare from the Treve Fountain was 10euros. The unit is also clean and the host very helpful with advice to a roman newbie. I will stay here again definitely