Stayed at Lina's place for a long stay in Rome and I could not recommend it more! Located in a great neighborhood, there is a ton of amenities available nearby that make it perfect for a long stay. There is a restaurant right around the corner that I went too at least once a week, and a caffe down near the square that was fantastic. Don't forget to wander the Testaccio Market for everything from clothes to quality fresh produce! Also a very short walk from the Trastevere neighborhood, just across the bridge, and there is ton to do!
The apartment itself was wonderful as well. plenty of space for multiple people, but when my quests left and I was alone it was also nice and cozy for one! Great kitchen with everything you could need to cook for yourself, multiple sleeping options, and its so easy to access, just one flight of stairs, and there's an elevator! Be prepared for some noise from the street out front, but the neighborhood in general is so quiet and lovely. Highly recommend!