TL;DR this place is going to be great for you and you definitely should book it.
We wanted a nice central location for doing tourist things, easily getting around via bus and metro, and enjoying local life. This Airbnb did all of that. It was cozy, clean, and had all the amenities we needed. The host was very communicative and helpful as well.
It is next to a high-traffic piazza and there was a guy who played music every night (annoying American folk music) which did get old by day 3. Note that the stair between the 1st and 2nd floor are intense (they are a little higher) and there IS A WASHING MACHINE in the unit.
The bed also is noisy. Every time my husband or I would get out of it it would wake us up.
Seriously though, it was a great place and I would totally stay again!