First of all, the location is AWESOME.
Second, the hosts were super friendly and always willing to share a chat together. They gave us some great recommendations!
Third, the room was just as described, and super cozy. (In fact, I wish my home bed was as cozy....) We had a small problem, and when we told the hosts they responded immediately and effectively. These guys are awesome at hospitality.
Overall, this place was a superb base to explore Bilbao from. I found myself day-dreaming about living in this flat. So much natural light, cozy furniture, and good vibes in the shared common room. If we're in Bilbao again, I would stay again. Thanks guys!