We stayed at Elenas place very close to the Vertican from Thursday to Monday this weekend. Everything was really nice; a small cozy and clean apartment with enough space for two/three people, a kitchen and bathroom, balcony, washing machine, etc.
Elena welcomed us in a very friendly way despite we arrived much too late (notice arrival latest at 21 hour) and kept in contact with us through our stay just to make sure we were ok.
The apartment is placed very close to the St. Peter station and the St. Peter church and it is really easy to get from the apartment to the city (walking distance) and the airport (train). You can actually see the St. Peter cathedral from the building and if you open the window from the bathroom you see a beautiful church.
We loved our stay and will definitely return if we go back to Rome.