Fantastic, clean and spacious apartment. It had all we needed. Its located in the student hub near the university campus. lots of eateries and a supermarket is close by. the supermarket we found quite cheap, but this may be because its customers are mostly students. the apartment had helpful information in a folder regarding where to eat and public transport, which was very helpful. we were a group of three women and felt safe walking around at night - dont be put off by the "rough look" of the neighbourhood. the shop owners close by are very friendly as well, even though our Italian was not very good. San Lorenzo is pretty central and found it easy to get to the main attractions around Rome using public transport (buses and trams). its also not far from Termini station. it should only cost you $15 Euro - dont let a cab driver tell you otherwise. (our cab driver on arrival ripped us off unfortunately)
Mr Joseph met us when we got there and let us check in early. He was very accomodating and pleasant to deal with. Mr Joseph also helped us arrange transport to Fiumicino Airport.
My friend who helped me arrange our accomodation said that Daniella was also fantastic to deal with.