Fernandon's apartment is huge, clean, well-equipped and situated in Bilbao's Casca Viejo- Old Town - which is a great place to stay.
The apartment really can be a home from home, with a fully usable kitchen, two bathrooms, a lounge, and two lovely bedrooms. We took the airport bus to Termibus, where it ends, then walked to the tram and got off at Arriaga; Fernando's place is across the road and down a side street.
Very highly recommended.