We had difficulty finding the car park suggested by Josune - we contacted her and she came to find us. Greeted us with a smile, showed us where to park and then helped us bring our luggage to her apartment.
Josune is a welcoming and gracious host, and took some time to give us the lowdown on what to see and do in the area - we arrived rather late, and she phoned the restaurant down the street to keep the kitchen open for us -- where they greeted us like old customers. The apartment itself is clean with comfortable beds.
If you are driving a car, this is not a convenient place to stay. There is no automobile access to the part of the street where the apartment is - so you will need to haul your baggage a fair distance from the closest drop-off point. That point has no parking either, so you will get some exercise from there to the closest parking.
If I were to visit Bilboa again without a vehicle, I would like to stay at Josune's place again - if I had a vehicle, I would probably look for a different location.