I had the pleasure of eating ath Casa Piolas a couple of years ago during a business trip.
We enjoyed a 12 course "menu degustacion", or tasting menu, that included some of the most clever dishes I've ever had the pleasure of eating. The chefs, who are big fans of Heston Blumenthal, like to experiment with dishes that trick the senses. For example, one dish looked like bacon served with a raw egg but was, in fact, something quite different (I'll let you go try it for yourself!).
I agree with the other reviews that the wine list at Casa Piolas is impressive. There are some delicious "vinos del terreno", or local wines, along with other from different regions of Spain.
The service at Casa Piolas was very attentive and the staff spoke enthusiastically about food in general.
Algarinejo is a bit off the beaten path but, if you're travelling through Granada province, is definitely worth making a detour. You will eat very well!
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