In the article below (in German), an eye-witness who was staying in an apartment with a view of the runway says that the aircraft was compensating for the strong crosswind on landing, so I guess there must have been some wind. He also says that emergency services were quick to attend.
He speculated (as eye-witnesses do) that the plane had been unable to straighten up on landing as the aircraft left the runway at a 45 degree angle before colliding with the building.
Leser schildert das Flugzeugunglück in Thailand - News Panorama: Vermischtes - tagesanzeiger.ch