We had a great time at Xabi's immaculate and fantastic apartment right in the center of Bilbao. Xabi is a kind, attentive and knowledgeable host, we hit it off just great.
The only reason I am giving our stay four stars in on account of there being very little hot water: only one person could take a 5-10 shower every hour or so. Very inconvenient for a family of four, but this was a technical issue and xabi was in communication the whole time and offered us free passes to a nearby recreational facility.