I recommend this place!
The location in the city is perfect for a city trip. We stayed there as a couple for almost a week and every museum, Piazza and Palazzo we visited is easily to reach in a few minutes of walking. It was not entirely quiet (but not noisy!) as it is directly in the city center, but sleeping was no problem.
The apartment itself was clean and equipped with everything you need.
Together with the excellent location come excellent hosts. Mario and Niccolò respond very fast to my messages and were always helpful and friendly. They provide their guests with some great restaurant tips and other recommendations.