It's not the best Thai in Seattle. Thai Tom's is the best Thai in Seattle. Methinks you are being overawed by the best Thai restaurant interior decorating in Seattle :-) .
I like (super-divey) Thai Tom, too, and (no restaurant at all, just streetside) Little Uncle is GREAT, and the new (and cheery-cafe-like) Mai Thaiku in Phinney Ridge seems really good so far. You're right insofar as the best-ness here is a combo of food and atmosphere. Also, not in Seattle, so...
Please wait...
and remember to be decent to everyone all of the time.