The Portland Phoenix has published a review of Kon Asian Bistro.
A lettuce wrap was more successful. The diced chicken had enough heat to work well against the coolness of the leaf, but not so much as to overwhelm the fresh basil. A tom yam soup was marred by a slightly bitter aftertaste. A shrimp tempura roll, ordered as an appetizer (but served with the entrées) was a bit overwhelmed by the glop of the creamy lobster sauce that topped it. The big shrimp were nice but the tempura got oily as it cooled.