Tried it out last week and really liked it. The shop is small but clean with a cool but unassuming vibe. The menu is relatively straightforward but has a few confusing wildcards in it, like the waffles. I get waffle cones. I get sweet waffles in a coffee or pastry shop. Seems odd here.
The yogurt was very good -- they have a few flavors mixed at any given time. The topping selection was outstanding (love the mochi!) and the service was very good. I was there on a quiet Saturday evening -- wonder what it's like during a rush?
Definitely recommend it if you're ever in West Menlo Park.