Not far from the airport - I just walked there in ca 15-20 mins. About 100m of road there is no pedestrian lane, but in a quite place away from highway, so for my 23:30 landing it didn't matter.
I was afraid of planes' noise (as I forgot my earplugs), but did not hear any. Instead I heard bell on clock tower right near the place. Well, was a little bit annoying but helped me not to sleep for too long.
Grocery store is around the corner, but if you arrive late in the evening like me, I'd suggest to buy something in the airport, there is a small bar in arrival zone.
Definitely will stay there again, this late flight to Bergamo is good for quick trips to IIaly.