As noted previously by others, the flat is well located, close to the Coliseum and next door to a nice restaurant. It is as seen on the pictures, and is nicely done. There is indeed quite a musty smell linked to the fact that it is on the ground floor.
Overall we found the communication with the host quite dry. We did not meet him. The check in was quite flexible but at check out there was no place to put our suitcase for a couple of hours (and no possibility to delay even for a little bit) so we were stuck with our suitcase, which pretty much ruined our last day in Rome. We also had little glitches in the communication as the water heater was not switched on and we were stuck with cold water and no response from the host as we were getting prepared for a wedding...
Overall the stay was ok, but we usually go for airbnbs to feel at home, and did not feel that at all this time, too bad!