Amelia's place is perfectly centrally located in Bilbao. You literally walk out the apartment complex, ten metres around the corner, and there is a city water fountain! Just another couple of minutes walk further along to the right and you come to what I think is the main park in the city which is very nice. And only another 5-10 minutes walk away is the Guggenheim Museum. Amelia does not speak much English (not that I speak much Spanish!) but we got by okay with online translations, and she was there to let me in when I arrived, and also provided a lovely extensive breakfast, so it really is the true 'bnb' experience. I also really liked Bilbao as a city; it is not as 'industrial' as you may think and well worth travelling to.
Regards, Greg