the amount of thai speaking customers at this restaurant bodes well for it authenticity. in terms of spiciness of the food, i can assure you they have a very authentic level of spiciness. i was keen on a boat noodle, but couldn't find it on their extensive menu, so had the tomyumnoodles which feature extensively on their menu (funnily enough, most of the other thai customers ordered the non-noodle dishes). i ordered the do dee lava noodles and being a level 3 spicy level, i thought this would have been a pretty safe bet since i can eat moderate levels of chilli. boy o boy was i wrong. either they prepared it wrong, or level 3 for a thai local is equivalent to a level 8 or 9 out of 10 for me. it was so spicy, i couldn't eat the dish much and just ended up picking out various bits of meat from the sad looking bowl. if i was to return, i think i would pick a non spicy, non noodle dish! chilli masochists rejoice!