We spent 3 nights in Javier’s nice place. Javier is very hospital and polite person, he always tried to help us with our luggage ;), also he gave us dozen tips and suggestions regarding Bilbao. The place is located nearby to city centre (10-15 mins walking) and other points of interest. For them who traveling by car there is a lot of FREE parking places on premises in 1-1,5 km away from place, so you can always park your car for free.
I strongly recommend Javier and his place!