We were staying at Ari's place when the Italian government announced the lock down and she could not have been more helpful in sorting us out, even giving us a full refund of our remaining days way before AirBnB announce that they would help. If you're particularly looking for a fantastic host, look no further.
The apartment is lovely, perfectly located in the Suburra. It's slightly strange to walk to the corner and be confronted by the Coloseum, you almost have to pinch yourself.
The six flights of steps up to the apartment are a challenge on the day you arrive, after a week of doing them a couple of times each day we noticed that our legs were visibly more shapely and we were nowhere near as puffed at the top, so don't be afraid.
Cavour Metro is literally a one minute walk away but everything you want to see in Rome is a short walk so don't plan on using it that much.
I would say if you're coming to Rome for a short break this is a great spot, we'd definitely stay again.