I've never been, so I don't have any experiences to relate, but given that they offer tapas, maybe you could go to Pepin, order a couple of small plates and drinks, and if it doesn't seem promising, move on to Tapas Papa Frita and/or Iruña, both of which are nearby. It would be kinda sorta like an actual Spanish tapas crawl, and it would give you an opportunity to compare the local Spanish restaurants head-to-head.
7363 E Scottsdale Mall, Scottsdale, AZ 85251
Tapas Papa Frita
7114 E Stetson Dr, Scottsdale, AZ 85251
7217 E 1st St, Scottsdale, AZ 85251