Yes, Lisbon is enchanting and yes, Madredeus is the balm for your ears, but including both into a film doesn't make it good. It also needs things like good actors and a good script. The actors in "Lisbon story" are doing just that - acting (not "living" the roles), and this keeps you from getting emotionally involved in what's happening.
It looks like Wenders chose the easiest path and expressed his ideas by simply letting Friedrich and Phillip tell everything in their monologues at the end of the film. I usually follow the "show, don't tell" rule. The language of cinema is not the same as the language of people, and in "Lisbon story" Wender seems to be able to speak the cinema language just as Mr. Winter is able to speak Portuguese: not much, but enough to survive.
It looks like Wenders chose the easiest path and expressed his ideas by simply letting Friedrich and Phillip tell everything in their monologues at the end of the film. I usually follow the "show, don't tell" rule. The language of cinema is not the same as the language of people, and in "Lisbon story" Wender seems to be able to speak the cinema language just as Mr. Winter is able to speak Portuguese: not much, but enough to survive.