“El quinto coño” refers, for reasons unclear even to connoisseurs of Jamesian multivulvular theory, to an almost impossibly far-away place. There’s a meme going round at the moment which places it in an undetermined locality in Murcia. Murcia is not far away from anywhere, so this is presumably Valencian slander.
Restaurante el Quinto Coño is actually in a small village called La Codosera in Los Baldíos de Alburquerque in the Extremaduran province of Badajoz, a mile or so away from Portugal. The local administration’s guide to the zone lists it with phone number 924 404 014, while an extract of the Chamber of Commerce register says it can be reached on 924 404 390 and that it does a menu for the exceptionally attractive price of 7€. It seems to be on the southern outskirts of the village, and I can’t think of that many places I’d prefer to be at the moment than having a pre-prandial something on the terrace:
(For all I know the “el quinto pino“, the fifth pine, may be in Murcia. Still quite a lot of pine in Murcia.)