Andreas apartment is absolutely wonderful, charming, and perfectly fit for a couple. The location is great as well - walking distance of città alta as well as the downtown area. Since the street is quite narrow it does make a lot of sound when cars and scooters drive by - especially at night, so if you are sensitive to sound perhaps bring some earplugs.
Andrea was really sweet to let us check-in in the middle of the night and communication was easy and straightforward.
Would definitely recommend and come back next time I visit Bergamo :-)