Kepa is an amazing host. On top of what was mentioned in his Airbnb listing, he also provided a Barik card for public transportation which allows big savings on ticket fares. On top of that, he lent me an umbrella since there were chances of rain, and this proved much helpful since it rained rather heavily at one point during my travel in Bilbao.
I would definitely recommend Kepa as a host and his accommodation for future travellers.