We had great time at Lorenzo's apartment! the location was perfect - Trastevere is the best place to be and the apartment is very close to the bus and tram stations.
Lorenzo was very nice and helpful, he showed us around, helped us buy local sim card and was checking to see if we need something from time to time .
another bonus for us was the fact that his office is 800 meters away. he offered us to put our suitcases there until we had to leave to the airport (21:30 flight).
the apartment was clean and perfect for us. the only thing you should be aware of is that the stairs to the 2nd floor are a bit steep. it was hard to pull the suitcases up and down. but hey... you only do it once.
the shower was excellent with very strong stream and you always have hot water in few seconds since the heating is gas based.
the TV is very good (with cables) and the WiFi worked great with zero glitches.
the kitchen is small but equipped. there was no problem to fix some breakfast and dinner during our stay.