I've never focused much on Bar Ferdinand, because I've never had the chance to go, but it might be the perfect place to bring an out of town guest this weekend (wants Spanish food, not too pricey). I know several Chowhounders like it, so tell me---what's good there? Any great cocktails? Anything meh to avoid? Are the desserts decent? Do we need a reservation for Sat. night? All info welcome. And thanks!