Pros
Everything worked, the bed was nice, and the place was clean. Two of the outlets had European adapters (which was a lifesaver for us) and a bunch of maps and guidebooks were in the living room. No real problems with the rental and EXCELLENT communication from the host. Reliable Internet was also great! It's literally across the street from the Colosseum, which meant that finding our way home at night, either by walking or by Metro was easy.

Cons
As other reviewers have mentioned, the place is damp and smelled a little musty. This is because it's a basement apartment and I'm not sure much can be done about it. Over the 4 days of our stay, we got used to it (sort of) and just left the windows and doors open for a while to let the fresh air in, when we got home. We couldn't leave them open all the time because that would let a few mosquitoes in. This also meant that our laundry took a few days to dry.

It was a little far from most of the action (bars & restaurants) but my girlfriend and I LOVED walking home each night... and there was always the metro which was the stop for the Colosseum.

Overall, a good value.