Additionally, they aren't doing "pretty well" with austerity by any honest metric. Even four years after the GFC, their GDPs are still below where they were in 2007/2008, significantly in Latvia's case. Unemployment is extremely high (From 4%/6% in 2007 to 10%/14% today) and wages have fallen.
Where is the success story here?
Lat + Est Unemployment: (https://www.google.com/publicdata/explore?ds=z8o7pt6rd5uqa6_...) Lat + Est GDP: (https://www.google.com/publicdata/explore?ds=d5bncppjof8f9_&...)