Orio al Serio is a very good option should you have to travel to the east of Milan. The strong increase in traffic in the last years has changed the face of this small airport. The terminal is now full of shops and bars. It can be quite crowded in the early morning and therefore you have to allow more time for check in and security controls. Unfortunately the terminal is much dirtier now and the toilets are filthy. Security controls are efficient and better than in bigger airports. they even run random checks on the passengers waiting for particular destinations like the UK. The passport control in the arrivals hall is very slow. The luggage delivery is quick. I always use the nearest parking lots as the price difference with the far ones is minimal.