This is an excellent find.
The location is fantastic, in the Spanish Steps pedestrian zone, 200 yards to the Metro Spagna stop, 2 yards (literally) to a good grocery store. One of the top alimentari in Rome is also in the building. Excellent coffee bars nearby. The street quiets nicely at night with no traffic. It’s about a 15 minute very pleasant walk on side streets in Campo Marzio to the sites of central Rome, including the Pantheon, Campo di Fiori, Piazza Navona, Piazza del Populo, Fontana di Trevi.
The apartment is very large (actually exceptionally large for Italy) and extremely well kept. Brightly lit. AC is great. We cooked a few meals in the well equipped kitchen. The owner and agent are very helpful and professional. The beds were really comfortable.
Over all this is a place we would absolutely recommend to friends and return to.