We had a terrific 3 night stay in Guillermo's apartment, which proved to be an excellent location from which to explore Madrid by foot (and a metro is never far away - and the metro system is great we may add!). The neighborhood is vibrant and lively, but de Calle Limon is a very quiet street, with a nice little plaza just in front (check out Cajita de Nori - neighboring tapas bar, superb!). The apartment is as described (small, but very convenient, great bathroom, bed, nicely decorated, a new washing machine etc. etc. and indeed there's no tv - but we watched some on the iPad with the WIFI, no prob), it was very clean & neat.
Special thanks go out to Antonio who greeted us and was superb in introducing us to the apartment and giving advice for getting around in Madrid. He immediately made us feel home. Bedankt / Gracias !
Ernst & Anna, Holland.