I'm thinking about the possibility of flying Rynair from BCN to the Bergamo airport of Milano (yes, yes, I know it's Ryanair) instead of MXP.

Would it be cheaper to stay (hostel-budget wise with 2 people) in Bergamo rather than Milano itself, and then perhaps train into the city for the day? Or is accommodation just as expensive?

Supposing we want to get to Pisa after this first leg. Can one train straight from Bergamo to Pisa, or would one still have to go back into Milano, and catch a train from there?

Also, any idea how much a train (return) costs between Milano and Bergamo? Finally, is Bergamo a nice place (well I'm sure all Italian towns are nice, but still)