Euro building 2 in Calle Orense 69
I used to live opposite, it's a good area, in the north of the city, not an enormous amount to see or do there compared with the centre, but as said, metro or bus 27 into centre is quick, cheap, and easy.
I wonder if the same hookers are on the courner, they must be in their 70's by now!
By the way the phone number must be 0034
915716794, as 31 is Holland.