The place is nicely decorated, and the staff are friendly, but that's about all it has going for it.
Maybe I don't know what authentic thai is, but this didn't seem like any Thai I've ever had. The menu didn't even offer the same kind of Thai food that I've ever had. Either way, the noodles I had were bland (9€).
The lunch menu comes with either soup or fried wontons. I went for the soup because it was cold out. It was alright, but before it came, a different waiter mistakenly brought the fried wontons to me, and they looked good.