Staying here was wonderful! The apartment is located in a neighborhood that is both authentic/non-touristy and close to major Rome attractions. Maria Cristina met us at a time that was convenient for us to check in, and gave a warm and welcoming tour of the place with recommendations of where to go.
The apartment decor was gorgeous and contemporary, making me want to make some updates to my own home! Having our own kitchen with all the tools, living room with Netflix, and bedroom with excellent AC made everything feel convenient, intimate, comfortable, and homey. The neighborhood is FULL of incredible restaurants and shops, especially the meat and cheese shop (Volpetti) and pastry shop (around since 1925) within about a block of the apartment. We spent a good portion of our trip just discovering interesting places within Testaccio, but were easily able to walk to the Colleseum within 15 minutes and central Rome within 30.
We were able to wash and hang dry our clothes, take hot showers with good pressure, and cook and eat at home for a couple nights easily. The other reviews are correct about the bed - the mattress is REALLY hard. It felt like a very safe apartment complex and neighborhood, and we were able to easily come and go.
Overall, I highly recommend staying here!