Three C.
Yelp
I see some posts dismissing negative reviews with 'oh, they don't know what Peruvian food *really* tastes like', which might be a valid note, except... the negative reviews are very clear -- prices too high, food is poor quality, service isn't good, and the manager doesn't do anything for the customer except diss or ignore them or both.
None of those things require knowing what something *really* tastes like -- they're all noting fundamental issues that should be addressed.
I've lived in Peru, and for what it's worth, Chio's versions of those lovely, deliciously addictive Peruvian dishes taste like cra-, uh, really bad. Not even close.
There literally isn't another Peruvian restaurant anywhere else in SFV that suffers all those issues -- watery sauce? Weirdly cut chicken that looks more like kitty-cat? Old or expired tasting ingredients? Tastes like a salt-lick? Not gonna happen in pretty much any other Peruvian restaurants. Yes, any restaurant can have a bad spell, it happens.
But friends of mine from Arequipa went there recently (I warned them, but they thought 'how bad can it be? How could anyone screw up some of these dishes?). They came back with sad faces, and said everything tasted like 'despair'.
Friends don't let friends waste their time with intentionally bad restaurants.