Federica is a kind and very helpful host, it was a pleasure to deal with her in all regards. Her flat is also beautiful and clean, and in a pleasant, quiet neighbourhood a 15 minute walk to the Vatican. The walls are a bit too thin, however, which made it difficult to have a good night's sleep (can hear the neighbours next door & walking around upstairs) -- I would highly recommend a good pair of earplugs to block the noise.