We really enjoyed our stay at Federico's place. It was very centrally located, with major historical sites easily being within walking distance. It was also only two streets away from Piazza Navona, which we walked to several times during our stay to see Bernini's wonderful fountains. Beware though, that most taxis and Ubers we took cannot drop you off in front of the apartment as the street is so narrow and at night the streets fill up with tourists. It is also up a very steep flight of stairs, which is totally manageable but can be difficult with heavy luggage. Because of the location, it can also be loud at night but this did not bother us much and could be easily ignored. Overall though we enjoyed our stay here and would stay again!