Great location! As Ilaria mentioned in her listing, you're pretty much walking distance everywhere. Her AirBnB is about less than 10 mins walking to Colosseum and less than 10 mins walking to Spanish Steps, Trevi Fountaint, and pretty much that area. You're also less than 10 mins walk from the Metro station which will take you easily to Vatican (or you can walk for 30 mins to reach the Vatican).
Usually, my husband and I will explore other restaurants in the area and not eat at a place more than once. Only 1 block away from Ilaria's AirBnB is a family-owned Italian restaurant called La Taverna Dei Monti. Worth checking out!
The AirBnB was nice and generally clean. The washing machine, AirCon and fridge were all working well. Neighborhood is quiet and we felt safe. There is a farmacia half-block away, as well as a mini-mart.