Pros: Wonderful in flight entertainment system, although I did not use it.
This Airbus A330 had upgraded business class seats that were fully lie flat (although of the type that places one practically on the floor); I wish I had know because I might have upgraded.
Avianca allows travellers to bid for upgraded seats, although their minimum upgrade price is quite expensive in my view.
Cons: I made the mistake of choosing seats 22A and 22B on the Airbus A330, which seats are next to the toilets. While there was no smell, the noise from the constant flushing of the toilets prevented me from sleeping on this 5-1/2 hour overnight flight.