This apartment is GORGEOUS and was very clean! The hosts did a wonderful job of decorating it. The neighborhood is amazing: you can see the roman fora from the balcony.
The NEIGHBORHOOD is very loud, BUT the apartment is very quiet when you close the windows. If staying in warm weather, make sure the air conditioners are working. Remember you're in europe--it's not central a/c. It is only in 2 of the bedrooms.
There were a number of communications quirks: some was language, some was the hosts losing their phone and/or being out of area. We were able to work out the problems anyway.