My sister and I stayed at Catia's place for 3 nights during the Christmas holidays. Her house was very clean and comfortable. She was very kind to us, and even offered us a chocolate cake she made which was out of this world! She also has a very cute cat named Nina, and we enjoyed her being around.
Also the location of her house is great and all the main tourist attractions are at a walking distance. But you can also easily reach a bus stop close by in case you want to use the public transportation, we took the bus to get to the Spanish stairs.
Catia also gave us some suggestions for the places to eat, which we really appreciated. We really enjoyed our stay in Rome with Catia and Nina, and we hope to get the same room the next time we visit!