We only had a really short stay in Simone's apartment before early morning flight.
Check-in and check-out are easy. Simone does a wonderful job communicating every detail about the apartment and Bergamo: check-in procedure (lockbox codes, location, etc.), taxi number, bus stop locations, sights to see, etc.
Apartment is clean and is located on a small and quiet internal street. Highly recommend for any duration of stay.
Getting a taxi at 4:00 in the morning was quite problematic, so it is better to book in advance. This is just a hint and has nothing to do with Simone or the apartment.
Thank you, Simone, for your presence (even if virtual) and your help with getting around Bergamo.