My wife and I stopped in late on a Sunday afternoon after touring the Stanford campus. Not surprisingly, the restaurant was pretty quiet, with only one other table of the huge lower-level dining area occupied and one person drinking at the bar.
We each opted for the house margarita--which, in truth was a little *too* well-made so I opted for a beer after that, because otherwise I would have been tempted to order another several of them. We opted to choose a variety of different menu options from the basic chips-and-salsa (served with three differednt salsas BTW), to "sopitos" (three small masa-made shells, each served with a different filling) to "cochinita pibil" a stewed pork dish with a great depth of flavor.
Reposadois a great choice for folks looking for flavorful and non-stereotypical Mexican food. It offers severa; unique and different menu choices that would also make it the kind of place you'd want to re-visit because there are so many intriguing options.
Still, it wasn't perfect. Despite the emptiness of the restaurant, there was the occasional lapse of service (when is that beer gonna get here???), and when I asked for flour tortillas to accompany my pork dish they were of the store-made, thin-and-chewy unexciting variety. But these are quibbles, and, if Trip Advisor had a 4.5 star scale might have knocked it down to that level.
Reading the other reviews about noise levels, we had quite the opposite experience. Perhaps because of the time of day, or lack of guests, they didn't have the music cranked up too high. But certainly noise volume did not affect our enthusiasm for the restaurant in any manner.