Asadors en Madrid
El Asador de Aranda, Calle Diego de León, 9, Telefono: 915630246
I don't eat meat myself, but a student has recommended this place - it's down the road from where I live, and it certainly has a very traditional look to it.
www.asadordearanda.com/ There are several of them in Madrid; they all look good.
Also recommended:Muuu - Calle Víctor Andrés Belaúnde, 8.Teléfono 9145771 61
You can choose where your meat comes from here.
And Estik: Calle Espronceda, 34. Madrid. Metro Nuevos Ministerios Teléfono 9139500 37
If you are talking about Basque asadores like Frontón--and money is no object--I'd recommend either Julian de Tolosa and Asador Ansoreña. As I remember, neither delivers the meat to be cooked on the piedra.
Asador de Aranda is a Castillian style asador for lamb... I much prefer Asador Tierra Aranda --order lamb kidneys (riñones) if they are available.