This will be overwhelmingly positive but to get two negatives stated:
Two steep narrow flights of stairs, tough to navigate with a colossal suitcase.
The nightly neighborhood party rages outside until 02:00 or later. We had to close the windows and run the AC, not our preference.
Ok three negatives, checkin instructions were confusing. Fortunately another Airbnb manager happened to be there and helped me do it.
Otherwise Simone is a great host, communicates well, patient, helped my wife with colossal suitcase.
Apartment is smart clean comfortable well organized, perfect for a single or couple.
First time in Trastevere and now we would not stay anywhere else in Rome. Lots of good restaurants cafes bars nightlife literally outside your door on charming mostly pedestrian narrow lanes. Short walk to tram or taxi stand.