Nu, I've had Ramen in San Francisco (practically all I ate for days), and Manhattan too. So, as you might guess, I'm a fan of the genre.
Atmosphere: Well, they're going for the "street cart" atmosphere in terms of decor. Doesn't seem to quite work with the female waitresses (I'd have gone with something slightly different).
Portion size: Large enough for a six mile walk afterward, and to still be not hungry at the end. Larger than Lulu's, and about triple what I had at Salt when they first started serving Ramen.
Miso Broth: Adequate, which puts it head over heels above the competition. This broth was seriously healing. Note: I'm not the one to ask about "too much salt." Also, they're serving Tokyo style, so it's using aka miso.
Noodles: did not appear to be made on site (not a knock). seemed neutral (as opposed to alkaline).
Veggies: excellent quality
Silverware: Chopsticks, which made dining interesting. But nobody was slurping the noodles, which was sad.
This restaurant is a must visit, even for me, who doesn't go to restaurants often. Note: they're doing a much better job with the ramen than with the "specialty noodle bowls" (the tom yum's broth was notably weaker.)