We had an amazing time in lorenzo's apartment. We were greeted by his friend josef (apologies if this is incorrect) and he gave us some tips on seeing the sites and good places to eat and was really friendly. The apartment was well equipped with everything we needed including hair dryer and iron which is amazing if you are only travelling with hand luggage. The apartment is in a fantastic location close to lots of restaurants and bars only a stones throw away. With this in mind though, it can be quite loud on the street until the early hours of you are a light sleeper. If you're up for walking the apartment is very accessible to all the sites. The Vatican is a 25 min walk, the colosseum 25 min walk, campo do fiori is 10 mins away and from there you can visit piazza navona, the pantheon, trevi fountain and Spanish steps. I am definitely glad we chose to stay at lorenzo's apartment - trastevere is a really cool location and, in my opinion, a better place to base yourself than near the tourist attractions areas.