Fernando welcomed us wholeheartedly and even printed an instruction manual in our native language, Dutch. His apartment is quite uphill in Bilbao, so I wouldn't advice coming if you are disabled, but it's very close to the old city center and has a wonderful view. The room was very clean (although a bit hot, but we visited during a heatwave); the bathroom and kitchen were all very nice.
Thanks again to Fernando, hope you see you again!