Our host was very kind at checkin and accommodating to our schedule changing due to lost baggage. The apartment is just as pictured.
Pros:
Great location near the train station. Short walk to the Colosseum.
Fast Wifi!
Very clean
Lots of storage to unpack clothing
Has a safe for valuables

Cons:
No blanket on the bed. I know it's summer, but I like the weight of a blanket when sleeping.
The shower goes ice cold for 2 min anytime anyone flushes in the building.
The shower is very small and needs a shelf of some sort to put soap, shampoo, etc on.
Host asked us to pay city taxes at checkin, even though it wasn't listed on the site. I wish I had been more knowledgeable about how AirBNB asks you to pay through the site rather than cash.
Work was ongoing in the stairwell which made it impossible to sleep in past 7:30am, or do any napping during the hottest part of the days. Probably could have been mentioned in the ad, even though it wasn't the hosts fault.

Overall it was a good value and we were happy with our stay and location.