Went there with wifey on Saturday and was very impressed.
Food is very good. Ramen is their main thing. Prices outstanding: Ramens (real homey stuff) at $6 thru $10, sushi a la carte $1.50-$4, rolls $4-10. Pleasant modern decor, good jazz music.
It's a couple doors down from The Gap on 6th Ave at Waverly.
Check it out.