I had 2 meals there recently and was favorably impressed. The menu is half Thai with a street food theme: noodles (dry and in soup), fried rice, a few salads, half a dozen curries, and a few pan-Asian touches. The other half is sushi and sashimi, with lots of fancy rolls.
Funky minimalist Somerville décor; friendly young Thai staff. No condiments on the tables but if you ask for chili they bring a 3-pot caddy with crushed red pepper, sliced jalapenos in vinegar, and sugar (?!).
Lunch #1 (ordered extra spicy but Im not sure what effect that had):
Tom yum soup. Two shrimp in a very spicy, sour, salty soup. Very much to my taste. Im assuming they did make it extra spicy because it was quite hot (the menu shows it with 1 out of 3 stars for heat). $3.50
Moody chef stir-fried noodles (2 stars): wide rice noodles, onion, green and jalapeno pepper, sweet basil, chili, spicy sauce and choice of ground pork, chicken or shrimp (I got pork). Very enjoyable, flavorful dish. Quite spicy but not blazing; this is when I asked for chili (really more to see what they had than from a need for extra heat). $6.25 (7.25 for shrimp)
Lunch #2: From the list of Super Famous Bangkok Street Style Noodles, ball ball noodle soup (choice of wide rice, egg, or vermicelli noodles). This came premixed with bean sprouts, scallions, and cilantro. A mild clear, garlicky pork broth with slices of anise-tinged roast pork, bits of plain boiled pork, mild-flavored fish and fish-and-pork balls. Egg noodles were both a firm linguini shape and a tenderer angel hair. Quite tasty with a faintly sweet impression overall. Even better with a generous helping of dried chili. $6.25
Portions were sized for a light meal, i.e., I could finish off a dish without feeling piggy. Same menu for lunch and dinner. I seem to recall a fruit drinks list but I dont see one on my takeout menu.
Only in my dreams have I eaten Bangkok street food; Id be interested in comments from those who really have.