Cristina's Place is excellent for budget travel. Location is perfect: easy 10 min walk to Metro station, and 20 min walk to the Colosseum. You are near the old city center. Was able to get around Rome easily from this apartment.
The rooms are spacious, the beds roomy, and I really like my soft pillow. The bed itself is firm. There is no AC, which is common of course. There are 2 restaurants directly below the apartment. While you can hear some talking below as you settle in for sleep, it did not keep me up.
The bathroom is shared. It has a full bath, toilet, bidet, and sink. There is a second room with toilet and sink only, in case 2 need to use at the same time. Water pressure is very good. I always had hot water. Toilet flueshes and works well. You can get water in the kitchen.
Cristina is a very sweet and kind lady. She provided pick-up service from the airport, FCO, which we arranged in advance. She gave us a map of the city, which was useful.
Christina's is a very good budget travel option while in Rome.