I'm renting my flat located in Bergamo, two bus stops from the airport BGY (or 2,5km).
The apartment is very well furnished and complete with everything (it's my home and I work in hotel in CH)
You can find everything: from washing to iron, from the cleaner to sugar.
The ap: living room, kitchen, bathroom, bedroom with 2 single beds.
550 euro/month for the flat.
web
Casa in cascina sul "palchet"
Please take note:
1. Bergamo is a beautiful, charming, tourist city with a Tuscany look. So very expensive for a small city.
2. Do not confuse: BGY and LIN are the same airport? yes-no. They're the same society but two different airports. BGY is 30 km (Autoroute 4) from Milan LIN Airport. If you're based in LIN: it's true that the transfer BGY-LIN is free, it's true that Bergamo is less expensive, but you lose too much time to live in Bergamo, it's better if you look for a place in Milan.
2. BGY in 2014 is closed until June 6 (the new runway).Don't wait the end of May or you remains without accomodation.
3. If you don't find anything try to go to the bar on Via Campagnola 2: there are ex-crew and ask them. I think so you spend less.
I hope to be helpful.