Ibiza is a real out of the ordinary treat. They have a great wine list that features Portuguese and Spanish wines. Their food is wonderful, I especially like the 2 cheese plates and the Tortilla Clasica de Patatas.
Ibiza is owned by the restaurant next door, Mallorca. I think their concept is to appeal to a little younger crowd and to be a little more stylish. Personally, I think they succeed, because the ambiance is rather sophisticated and elegant.
Make sure you take a look at their wine flights, I think they are a remarkable deal.
The service has always been very attentive polished. Keep in mind you can use the lot next to Mallorca for $5 valet parking.