The good: The host was wonderful and very understanding since our train ran late and she waited for us to give us the keys. The toilet and the shower are very good, and the place is clean. Location is very very good. In a quiet residential neighborhood . Near the 2 main train stations in Rome and near subway stops.
The bad: day 1 before we brought any food into the unit there's a cockroach in the kitchen. Killed it. Then Day 2 there's another cockroach chilling on the kitchen counter. There's no food around so I don't understand what attracts them. Nevertheless, they're there. The space is quite small and cramped. The cupboard in the kitchen is too low over the sink. Also the bathroom faucet has a tendency to drench you in water if you make the mistake of engaging too much water through the faucet. If you raise the faucet tap lightly you'll be fine.
Unfortunately can't recommend this to my friends.