There was a similarly entitled 'thread' on one of Madridman's forums (fora?) not too long ago. You might try to look it up and see what people have to say.
As for me, I prefer Santander: Universidad Internaciónal Menendez Pelayo (UIMP) is right on Avda. de los Castros in el Sardinero. It's not a 'fly by night' language school. It's been there at least 50-years. As for night life: last September, we stayed at Hostal Paris in el Sardinero - we were awakened by the crowds leaving the 'discos' every night around 04:00.
40-years ago it was the Tuna Universitaria congregating at 'El Chupi' tavern on Avda. de los Castros that kept me awake half the night. Now it's the 'discotecas.'
The people in Cantabria (Santander) speak Castellano very fast. They say Madrileños have a drawl.
One vote for Santander!
BTW
I was lucky to be able to renew acquaintances with some 'old' friends on Avda. de los Castros, one of whom was the owner/manager of 'El Chupi,' which, by the way, is the Spanish word for a child's 'pacifier.' :p
[ 05-17-2001: Message edited by: Eddie ]