My girlfriend and I had a lovely 7 nights stay at Casa Federico. The apartment is clean, warm and comfortable. The host, Roberto, was very friendly and helpful. He provided all the information we needed. Also he greeted as with a champagne for our New Year's Eve. The location is not perfect. If you want to use the metro only, then you need to be prepared to walk uphill at least 12 minutes. You can take a bus to go up, but in the evening we had to wait a lot for those buses, so we rather walked. Overall, I would recommend everyone to stay at Casa Federico and enjoy the beauty of the city of Rome.