Very nice location. The flat is upstairs and the elevator helps to move quickly.
You can't use ac and hairdryer at the same time. AC also requires window to be open. The sink spout isn't easy to use and the the shower is placed awkwardly. Internet is not able to be accessed in one of the bedrooms.
The flat is not noisy at all and is nice despite being old. Valeriano is an amazing host and gets back to you very quick on any issue. Being able to see the Pantheon right from your door is amazing. The closest bus stop is roughly only 5 mins. Most of the city is very walkable from the location.