Pretty much as perfect a stay as you could hope for. Francesca's apartment was wonderfully located, right on top of Piazza Vecchia and all its bars, restaurants, and beautiful, notable buildings.
Inside was very clean and comfortable, with plenty of room for either two couples or a family of 5/6, especially with having two full bathrooms (no bathtubs, just showers should that matter), and a small but functional kitchen should you wish to cook for yourself.
from booking right up to the end of our stay, Francesca was very friendly and helpful, giving us transport and restaurant recommendations, as well as all the info needed for the apartment itself.
So overall, not a single negative, although I would suggest it may be difficult for anyone with mobility issues or lots of luggage as it is a very old building with two steep flights of stairs but no lift.
I would definitely consider this apartment should I return to Bergamo any time soon!