Without a doubt the best thing about the apartment is Francesca, the host. She is very friendly and always pending of us and whatever we need.
The apartment is comfortable and only a 5 minute walking from the Vatican, in a very quiet neighborhood. Very close from all mayor points of interesting in Rome downtown, and also close to the bus stop.
Perhaps the only thing that could be improved are the mattresses of two of the rooms, everything else was very good.