Sergio's place is great, especially if you want to be close to the train station for arrival or further traveling, which is walking distance, and the metro even closer. There are tons of non touristy places to eat (do not miss out on Vittorio and also the gelateria right by the apartment). The place is full of cool antiques and is super clean. The room is spacious enough for 2 open suitcases and the private bathroom is a huge plus. Sergio gave us plenty of ideas for traveling around Rome, detailed description of metro use and even helped up figure out if the city pass was worth it or not. I highly recommend this place as a base for visiting Rome!