The location is excellent. It's a SHORT walk to the taxi stand in Piazza Trilussa, a pleasant walk (even in summer) to Campo de Fiori, the Pantheon, the Roman Ghetto, Testaccio, etc. The Trastevere nightlife is pleasant to be around but just far enough away not to be bothersome.
My sister & brother-in-law (master bedroom), mother & sister (giant fold-out couch), and I (small terrace room) slept very comfortably. The master & living room (w/ fold-out couch) had portable A/Cs that did a nice job. I had a small fan & open door that, even in 90f daytime temps, was fine for sleeping alone.
We had moka pot and french press coffee every morning. The apartment is well equipped for meals.
There's a same-day laundry service nearby (Il Mastello) but the washing machine and drying lines were VERY convenient.
The elevator is wonderfully slow and rock solid. It was handy for moving our luggage in & out. My 78yo mother used it a few times when the stairs were too much.
My sisters enjoyed the big mirrors and blow dryer.
It's a spacious, well-decorated, and very comfortable place. I would not hesitate to stay there again.