For delicious coffee and pastries, try Café Manuela (calle San Vincente Ferrer 29, metro stop Tribunal). They have a great selection of coffee drinks (with or without spirits), pastries and sweets (tartas, croissants, etc.). I recommend the tarta de manzana — a pastry similar to good old American deep dish apple pie. If you have time, you and your friends can even play a board game (they have a ton!).