My husband and I drove from Madrid to this place on our recent honeymoon and found Josune to be the most welcoming host imaginable. She's so friendly and told us everything we needed to know about the area and her place, which is very well-equipped, clean and comfortable. There's a garage close to the apartment so we didn't have to worry about our vehicle, and Josune even guided us to the spot. But it's just close enough to Bilbao's attractions and amazing pintxos bars that we never used our car to get around. We liked to walk the path through the park, over the bridge by the iconic church and market and along the river to the Guggenheim. I would even suggest walking along the river when heading into the downtown area, even if it's not the fastest route.
Anyways, great place with a great host and it's greatly affordable.