I saw this last week. It's one of the rare times I found myself liking the book much more than the score (at least with a "new" musical). The acting is terrific (although Linzi Hateley was out for our show), and the direction is marvelous. I found myself a little bored in Act I, but captivated in Act II. Some of the dialogue was truly funny. As someone who rather likes going to Belgium (especially over Italy), that particular joke/through line was effective. While I didn't tear up during the show, plenty of folks around me did, and I understand why.
The music and lyrics were ... serviceable, at best. No real memorable tunes (at least for me, others may disagree). Felt very much like a DEH retread.
I found the placement of some songs to be forced. The placement of Uma Vida in particular felt a little awkward to me. And my feelings about "Work of Heart" are the same as "Independently Owned" in Shucked -- did we really need that song *there*? But all that is subjective.
All told, it's an enjoyable show, and worth a watch. I do like that the book resolves the plot nicely and, while predictable, tells the story well. I think with a few updates (a la the changes they made here and there to "Americanize" the Prima Facie script), this would do OK on Broadway for a while. I don't think it's a grand show, but it's a good one.