I found Gli Aristi on Trip Advisor and it was perfect for us. Alessandro, the proprietor arranged transportation for us from the airport and greeted us at the B&B for a friendly and informative orientation of the place and the surrounding area. The breakfast room is open all day and guests may help themselves to fruit, juice, yogurt, or bottled water at any time of day. In the mornings Chinzia or Tess are there to make you Espessos and also serve a nice assortment of pastries, cheese, and meats.
We stayed in the yellow room and were very comfortable. The beds and linens were of good quality. The decor is simple, but welcoming. Everything is very clean.
The location is great as much of Rome is within walking distance (Vatican is four blocks away), but also because the metro is literally around the corner. We spent three days walking and touring this beautiful city, and every night we returned to our quiet peaceful room at Gli Artisti.
I would love to stay here again one day and definitely recommend it to anyone considering a trip to Rome.