This place is great. It is about a 10-15 minute walk to the Colosseum, a 12-min walk to the Repubblica subway station going to Vatican City, and a 5 minute walk to the Cavour subway station.
The host makes sure the place is well-kept. The place has heat, but no air-conditioning. However, the apartment is at ground-level and stays pretty cool on its own with a fan in the bedroom if needed. There is a very new washer/dryer all-in-one, as well as a drying rack and iron if needed.
There is a tiny bit of noise at night coming in from the street in the kitchen/living room with the bunk bed. The bedroom in the middle of the apartment is very quiet and we found the bed to be very comfortable.
There are plenty of restaurants, gelato shops, and pharmacies within short walking distance, as well as grocery stores if needed.
We would definitely stay again.