I stayed here with my partner for a week during July. It all started with Rossana coming to collect us personally at the airport. Even though she had work on that day she still took the time to introduce us to everything at the apartment.
Everything we needed was there. Working aircon (which was essential in the Summer heat), comfortable bed, WiFi, and great attention to detail. The place is as lovely as the pictures suggest and Rossana was super helpful and always answering texts when we had a question.
The kitchen is fully equipped and just 700m down the road is an awesome supermarket (Esselunga). It's affordable and actually makes you want to cook while on holiday :D We definitely spent too much there haha but it was so worth it.
In terms of transport it's one bus to the city center or two buses to the old city. There's also a tram station nearby. I would recommend renting a car as there are some beautiful lakes nearby where you can spend the day swimming and tanning.
Most importantly, we felt very much at home at Rossana's place. This was our first AirBnb and what a great experience it was. It makes a big difference when you get along with the host and Rossana and her husband were a joy to meet and spend some time with.
Bergamo is a beautiful city and the people were really friendly. The old city is a wonder to behold and feels like something out of a movie.
Two thumbs up from us :-D