We had a great stay, really enjoyed our stay in Bilbao, the apartment is perfect for families. And our host really took care of us. She proactively sent us local spots for foodies, things to visit, as well as landmarks.
She also helped us book cabs and was extremely reactive, nice to talk to and we never felt like we bothered her. She definitely made the difference and I'm glad we could experience the taste of Basque hospitality. 5 stars!