J&J Books and Coffee as well as Cafe Madrid (No. 6, Calle Mesón de Paños, Metro Opera) both have intercambio nights on Wednesdays. The one at Cafe Madrid is very popular, so popular in fact that I found the place to be a bit too crowded for my taste (I did however meet some really nice people!). J&J Books and Coffee offers a more cozy atmosphere, and as a bonus there's a book shop in the basement where you can find second-hand English books at a really good price. It's definitely worth giving it a try!
J&J Books and Coffee is located at No. 47, calle Espiritu Santo, near the Noviciado metro station. The intercambios start at around 9:00 pm.

