Right in the middle of Rome, so walk to all major attractions once you get there (furthest is Vatican City which is still only an easy 40min walk away). Recommend using Valerio's airport transfer as Rome is not metro-friendly given its historic sites. Taxi stand nearby for heading to airport or Termini station. Big supermarket 3min away, with smaller ones just downstairs.
Valerio met us in person at around 8pm and gave a detailed tour and introduction to Rome.
Entering the building, there is a flight of 10 steps to get to lifts.
Apartment itself is good-sized (we were a couple, but looks like it could easily sleeping up to 4). One bathroom up on the split level as ensuite to the main bed area (small bathroom with low ceilings).
The welcome goodies was appreciated. Overall, location and hospitality can't be beat!