Very centrally located, excellent walkable access to many top tourist sights. Pantheon, Piazza Navona, Campo de' Fiore are all within a few minutes, and the Trevi Fountain, Roman Forum/Colosseum, St. Peter's/Vatican, Spanish Steps, Trastevere, etc. are about 20 minutes by foot. (Also, many very useful buses pass nearby on Corso Vittorio Emanuele II.)
The apartment is very basic but very comfortable. Small espresso maker and coffee/sugar provided, which helped jump-start mornings. The steps required to get up to the apartment might be difficult for some older travelers or though with mobility issues, as there is no lift.
Highly recommended for single travelers or couples looking for budget accommodations in the "Centro Storico" (Historic Center) of Rome!