There is a wonderful book store in Palermo Soho in Buenos Aires called Eterna Cadencia HERE
It has the feeling of an old English Library. Antique chandeliers, old leather chairs, tables stacked with books, libray ladders, floor to ceiling wood book shelves, all add up to a place you can wile away the hours.
It has a very nice restaurant too, with very moderate prices, and very good food. There is also one section of books in English.